Fix spelling mistakes in //docs.

docs/closure_compilation.md

 # Closure Compilation
 
 ## What is type safety?
 
 [Strongly-typed languages](https://en.wikipedia.org/wiki/Strong_and_weak_typing)
 like C++ and Java have the notion of variable types.
 
 This is typically baked into how you declare variables:
 
 ```c++
@@ skipping 26 matching lines @@
 tool for analyzing JavaScript and checking for syntax errors, variable
 references, and other common JavaScript pitfalls.
 
 To get the fullest type safety possible, it's often required to annotate your
 JavaScript explicitly with [Closure-flavored @jsdoc
 tags](https://developers.google.com/closure/compiler/docs/js-for-compiler)
 
 ```js
 /**
  * @param {string} version A software version number (i.e. "50.0.2661.94").
- * @return {!Array<number>} Numbers corresponing to |version| (i.e. [50, 0, 2661, 94]).
+ * @return {!Array<number>} Numbers corresponding to |version| (i.e. [50, 0, 2661, 94]).
  */
 function versionSplit(version) {
   return version.split('.').map(Number);
 }
 ```
 
 See also:
 [the design doc](https://docs.google.com/a/chromium.org/document/d/1Ee9ggmp6U-lM-w9WmxN5cSLkK9B5YAq14939Woo-JY0/edit).
 
 ## Typechecking Your Javascript
@@ skipping 131 matching lines @@
 ++       '../my_project/compiled_resources2.gyp:*',
       ],
     }
   ]
 }
 ```
 
 This file is used by the
 [Closure compiler bot](http://build.chromium.org/p/chromium.fyi/builders/Closure%20Compilation%20Linux)
 to automatically compile your code on every commit.