Formateed react-v16.9.0 post (#2501)

* format post react-v16.9.0

* running yarn check-all

content/blog/2019-08-08-react-v16.9.0.md

@@ -48,7 +48,7 @@ const userProfile = {
 };
 // This will now warn:
 <a href={userProfile.website}>Profile</a>
-````
+```
 
 **In React 16.9,** this pattern continues to work, but it will log a warning. If you use `javascript:` URLs for logic, try to use React event handlers instead. (As a last resort, you can circumvent the protection with [`dangerouslySetInnerHTML`](/docs/dom-elements.html#dangerouslysetinnerhtml), but it is highly discouraged and often leads to security holes.)
 
@@ -70,7 +70,6 @@ This pattern was almost never used in the wild, and supporting it causes React t
 
 We don't expect most codebases to be affected by this.
 
-
 ## New Features {#new-features}
 
 ### Async [`act()`](/docs/test-utils.html#act) for Testing {#async-act-for-testing}
@@ -89,7 +88,7 @@ An update to SomeComponent inside a test was not wrapped in act(...).
 await act(async () => {
   // ...
 });
-````
+```
 
 This solves the remaining cases where you couldn't use `act()` before, such as when the state update was inside an asynchronous function. As a result, **you should be able to fix all the remaining `act()` warnings in your tests now.**
 
@@ -209,12 +208,12 @@ Refer to the documentation for [detailed installation instructions](/docs/instal
 
 ### React {#react}
 
- * Add `<React.Profiler>` API for gathering performance measurements programmatically. ([@bvaughn](https://github.com/bvaughn) in [#15172](https://github.com/facebook/react/pull/15172))
+* Add `<React.Profiler>` API for gathering performance measurements programmatically. ([@bvaughn](https://github.com/bvaughn) in [#15172](https://github.com/facebook/react/pull/15172))
 * Remove `unstable_ConcurrentMode` in favor of `unstable_createRoot`. ([@acdlite](https://github.com/acdlite) in [#15532](https://github.com/facebook/react/pull/15532))
 
- ### React DOM
+### React DOM {#react-dom}
 
- * Deprecate old names for the `UNSAFE_*` lifecycle methods. ([@bvaughn](https://github.com/bvaughn) in [#15186](https://github.com/facebook/react/pull/15186) and [@threepointone](https://github.com/threepointone) in [#16103](https://github.com/facebook/react/pull/16103))
+* Deprecate old names for the `UNSAFE_*` lifecycle methods. ([@bvaughn](https://github.com/bvaughn) in [#15186](https://github.com/facebook/react/pull/15186) and [@threepointone](https://github.com/threepointone) in [#16103](https://github.com/facebook/react/pull/16103))
 * Deprecate `javascript:` URLs as a common attack surface. ([@sebmarkbage](https://github.com/sebmarkbage) in [#15047](https://github.com/facebook/react/pull/15047))
 * Deprecate uncommon "module pattern" (factory) components. ([@sebmarkbage](https://github.com/sebmarkbage) in [#15145](https://github.com/facebook/react/pull/15145))
 * Add support for the `disablePictureInPicture` attribute on `<video>`. ([@eek](https://github.com/eek) in [#15334](https://github.com/facebook/react/pull/15334))
@@ -229,13 +228,13 @@ Refer to the documentation for [detailed installation instructions](/docs/instal
 * Fix hiding Suspense fallback nodes when there is an `!important` style. ([@acdlite](https://github.com/acdlite) in [#15861](https://github.com/facebook/react/pull/15861) and [#15882](https://github.com/facebook/react/pull/15882))
 * Slightly improve hydration performance. ([@bmeurer](https://github.com/bmeurer) in [#15998](https://github.com/facebook/react/pull/15998))
 
- ### React DOM Server
+### React DOM Server {#react-dom-server}
 
- * Fix incorrect output for camelCase custom CSS property names. ([@bedakb](https://github.com/bedakb) in [#16167](https://github.com/facebook/react/pull/16167))
+* Fix incorrect output for camelCase custom CSS property names. ([@bedakb](https://github.com/bedakb) in [#16167](https://github.com/facebook/react/pull/16167))
 
- ### React Test Utilities and Test Renderer
+### React Test Utilities and Test Renderer {#react-test-utilities-and-test-renderer}
 
- * Add `act(async () => ...)` for testing asynchronous state updates. ([@threepointone](https://github.com/threepointone) in [#14853](https://github.com/facebook/react/pull/14853))
+* Add `act(async () => ...)` for testing asynchronous state updates. ([@threepointone](https://github.com/threepointone) in [#14853](https://github.com/facebook/react/pull/14853))
 * Add support for nesting `act` from different renderers. ([@threepointone](https://github.com/threepointone) in [#16039](https://github.com/facebook/react/pull/16039) and [#16042](https://github.com/facebook/react/pull/16042))
 * Warn in Strict Mode if effects are scheduled outside an `act()` call. ([@threepointone](https://github.com/threepointone) in [#15763](https://github.com/facebook/react/pull/15763) and [#16041](https://github.com/facebook/react/pull/16041))
 * Warn when using `act` from the wrong renderer. ([@threepointone](https://github.com/threepointone) in [#15756](https://github.com/facebook/react/pull/15756))

content/blog/2019-08-15-new-react-devtools.md

@@ -4,7 +4,7 @@ author: [bvaughn]
 ---
 We are excited to announce a new release of the React Developer Tools, available today in Chrome, Firefox, and (Chromium) Edge!
 
-## What's changed?
+## What's changed? {#whats-changed}
 
 A lot has changed in version 4!
 At a high level, this new version should offer significant performance gains and an improved navigation experience.
@@ -14,7 +14,7 @@ It also offers full support for React Hooks, including inspecting nested objects
 
 [Visit the interactive tutorial](https://react-devtools-tutorial.now.sh/) to try out the new version or [see the changelog](https://github.com/facebook/react/blob/master/packages/react-devtools/CHANGELOG.md#400-august-15-2019) for demo videos and more details.
 
-## Which versions of React are supported?
+## Which versions of React are supported? {#which-versions-of-react-are-supported}
 
 **`react-dom`**
 
@@ -26,7 +26,7 @@ It also offers full support for React Hooks, including inspecting nested objects
 * `0`-`0.61`: Not supported
 * `0.62`: Will be supported (when 0.62 is released)
 
-## How do I get the new DevTools?
+## How do I get the new DevTools? {#how-do-i-get-the-new-devtools}
 
 React DevTools is available as an extension for [Chrome](https://chrome.google.com/webstore/detail/react-developer-tools/fmkadmapgofadopljbjfkapdkoienihi?hl=en) and [Firefox](https://addons.mozilla.org/en-US/firefox/addon/react-devtools/).
 If you have already installed the extension, it should update automatically within the next couple of hours.
@@ -37,14 +37,14 @@ If you use the standalone shell (e.g. in React Native or Safari), you can instal
 npm install -g react-devtools@^4
 ```
 
-## Where did all of the DOM elements go?
+## Where did all of the DOM elements go? {#where-did-all-of-the-dom-elements-go}
 
 The new DevTools provides a way to filter components from the tree to make it easier to navigate deeply nested hierarchies.
 Host nodes (e.g. HTML `<div>`, React Native `<View>`) are *hidden by default*, but this filter can be disabled:
 
 ![DevTools component filters](../images/blog/devtools-component-filters.gif)
 
-## How do I get the old version back?
+## How do I get the old version back? {#how-do-i-get-the-old-version-back}
 
 If you are working with React Native version 60 (or older) you can install the previous release of DevTools from NPM:
 
@@ -70,7 +70,7 @@ yarn build:extension
 # Follow the on-screen instructions to complete installation
 ```
 
-## Thank you!
+## Thank you! {#thank-you}
 
 We'd like to thank everyone who tested the early release of DevTools version 4.
 Your feedback helped improve this initial release significantly.

content/docs/reference-profiler.md

@@ -16,7 +16,7 @@ Its purpose is to help identify parts of an application that are slow and may be
 > To opt into production profiling, React provides a special production build with profiling enabled.
 > Read more about how to use this build at [fb.me/react-profiling](https://fb.me/react-profiling)
 
-## Usage
+## Usage {#usage}
 
 A `Profiler` can be added anywhere in a React tree to measure the cost of rendering that part of the tree.
 It requires two props: an `id` (string) and an `onRender` callback (function) which React calls any time a component within the tree "commits" an update.
@@ -70,7 +70,7 @@ render(
 >
 > Although `Profiler` is a light-weight component, it should be used only when necessary; each use adds some CPU and memory overhead to an application.
 
-## `onRender` Callback
+## `onRender` Callback {#onrender-callback}
 
 The `Profiler` requires an `onRender` function as a prop.
 React calls this function any time a component within the profiled tree "commits" an update.