igl | Fixed naming and comment formatting (#223)

Summary: Pull Request resolved: #223

Reviewed By: KyleFung

Differential Revision: D66671775

Pulled By: corporateshark

fbshipit-source-id: 987c027ad5daf6ea0d5093caa3c13b79087594d0

CONTRIBUTING.md

@@ -1,4 +1,4 @@
-# Contributing to igl
+# Contributing to IGL
 We want to make contributing to this project as easy and transparent as
 possible.
 
@@ -11,7 +11,7 @@ We actively welcome your pull requests.
 4. Ensure the test suite passes.
 5. Make sure your code lints.
 6. If you haven't already, complete the Contributor License Agreement ("CLA").
-7. Please respect // @fb-only comments and do not delete them!
+7. Please respect `// @fb-only` comments and do not delete them!
 
 ## Contributor License Agreement ("CLA")
 In order to accept your pull request, we need you to submit a CLA. You only need