Change links to React lifecycle methods diagram to use HTTPS (#2973)

content/docs/reference-react-component.md

@@ -39,7 +39,7 @@ The only method you *must* define in a `React.Component` subclass is called [`re
 
 ### The Component Lifecycle {#the-component-lifecycle}
 
-Each component has several "lifecycle methods" that you can override to run code at particular times in the process. **You can use [this lifecycle diagram](http://projects.wojtekmaj.pl/react-lifecycle-methods-diagram/) as a cheat sheet.** In the list below, commonly used lifecycle methods are marked as **bold**. The rest of them exist for relatively rare use cases.
+Each component has several "lifecycle methods" that you can override to run code at particular times in the process. **You can use [this lifecycle diagram](https://projects.wojtekmaj.pl/react-lifecycle-methods-diagram/) as a cheat sheet.** In the list below, commonly used lifecycle methods are marked as **bold**. The rest of them exist for relatively rare use cases.
 
 #### Mounting {#mounting}
 
@@ -109,7 +109,7 @@ Each component also provides some other APIs:
 
 ### Commonly Used Lifecycle Methods {#commonly-used-lifecycle-methods}
 
-The methods in this section cover the vast majority of use cases you'll encounter creating React components. **For a visual reference, check out [this lifecycle diagram](http://projects.wojtekmaj.pl/react-lifecycle-methods-diagram/).**
+The methods in this section cover the vast majority of use cases you'll encounter creating React components. **For a visual reference, check out [this lifecycle diagram](https://projects.wojtekmaj.pl/react-lifecycle-methods-diagram/).**
 
 ### `render()` {#render}
 
@@ -245,7 +245,7 @@ You **should not call `setState()`** in `componentWillUnmount()` because the com
 
 ### Rarely Used Lifecycle Methods {#rarely-used-lifecycle-methods}
 
-The methods in this section correspond to uncommon use cases. They're handy once in a while, but most of your components probably don't need any of them. **You can see most of the methods below on [this lifecycle diagram](http://projects.wojtekmaj.pl/react-lifecycle-methods-diagram/) if you click the "Show less common lifecycles" checkbox at the top of it.**
+The methods in this section correspond to uncommon use cases. They're handy once in a while, but most of your components probably don't need any of them. **You can see most of the methods below on [this lifecycle diagram](https://projects.wojtekmaj.pl/react-lifecycle-methods-diagram/) if you click the "Show less common lifecycles" checkbox at the top of it.**
 
 
 ### `shouldComponentUpdate()` {#shouldcomponentupdate}