docs(readme): fix formatting

Author: adzample

CONTRIBUTING.md

@@ -66,13 +66,13 @@ Help us to maximize the effort we can spend fixing issues and adding new
 features, by not reporting duplicate issues.  Providing the following information will increase the
 chances of your issue being dealt with quickly:
 
-* **Overview of the issue** - if an error is being thrown a non-minified stack trace helps
+* **Overview of the Issue** - if an error is being thrown a non-minified stack trace helps
 * **Motivation for or Use Case** - explain why this is a bug for you
 * **Angular Version(s)** - is it a regression?
 * **Browsers and Operating System** - is this a problem with all browsers or only IE8?
-* **Reproduce the error** - provide a live example (using [Plunker][plunker] or
+* **Reproduce the Error** - provide a live example (using [Plunker][plunker] or
   [JSFiddle][jsfiddle]) or a unambiguous set of steps.
-* **Related issues** - has a similar issue been reported before?
+* **Related Issues** - has a similar issue been reported before?
 * **Suggest a Fix** - if you can't fix the bug yourself, perhaps you can point to what might be
   causing the problem (line of code or commit)