typos fix (#7822)

_posts/2016-09-28-our-first-50000-stars.md

@@ -83,7 +83,7 @@ TestProject.PersonDisplayer = {
 
 ## FBolt is Born
 
-Through his FaxJS experiment, Jordan became convinced that functional APIs  — which discouraged mutation —  offered a better, more scalable way to build user interfaces. He imported his library into Facebook's codebase in March of 2012 and renamed it “FBolt”, signifying an extension of Bolt where components are written a functional programming style. Or maybe “FBolt” was a nod to FaxJS – he didn't tell us! ;)
+Through his FaxJS experiment, Jordan became convinced that functional APIs  — which discouraged mutation —  offered a better, more scalable way to build user interfaces. He imported his library into Facebook's codebase in March of 2012 and renamed it “FBolt”, signifying an extension of Bolt where components are written in a functional programming style. Or maybe “FBolt” was a nod to FaxJS – he didn't tell us! ;)
 
 The interoperability between FBolt and Bolt allowed us to experiment with replacing just one component at a time with more functional component APIs. We could test the waters of this new functional paradigm, without having to go all in. We started with the components that were clearly best expressed functionally and then we would later continue to push the boundaries of what we could express as functions.
 
@@ -119,7 +119,7 @@ final class :a:post extends :x:element {
 }
 ```
 
-Before Jordan's work even made its way into the Facebook codebase, Adam Hupp implemented an XHP-like concept for JavaScript, written in Haskell. This system enabled you to write the following inside a JavaScript file:
+Before Jordan's work had even made its way into the Facebook codebase, Adam Hupp implemented an XHP-like concept for JavaScript, written in Haskell. This system enabled you to write the following inside a JavaScript file:
 
 ```js
 function :example:hello(attrib, children) {