Lint codebase

Summary: Lint codebase

Reviewed By: bottler

Differential Revision: D29263057

fbshipit-source-id: ac97f01d2a79fead3b09c2cbb21b50ce688a577d

.github/CONTRIBUTING.md

@@ -43,7 +43,7 @@ Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe
 disclosure of security bugs. In those cases, please go through the process
 outlined on that page and do not file a public issue.
 
-## Coding Style  
+## Coding Style
 We follow these [python](http://google.github.io/styleguide/pyguide.html) and [C++](https://google.github.io/styleguide/cppguide.html) style guides.
 
 For the linter to work, you will need to install `black`, `flake`, `isort` and `clang-format`, and

.github/ISSUE_TEMPLATE/bugs.md

@@ -27,4 +27,4 @@ Please include the following (depending on what the issue is):
 ```
 
 Please also simplify the steps as much as possible so they do not require additional resources to
-	 run, such as a private dataset.
+   run, such as a private dataset.

.github/ISSUE_TEMPLATE/questions-help.md

@@ -17,5 +17,5 @@ Also note the following:
    please use the "Bugs / Unexpected behaviors" issue template.
 
 2. We do not answer general machine learning / computer vision questions that are not specific to
-	 PyTorch3D, such as how a model works or what algorithm/methods can be
-	 used to achieve X.
+   PyTorch3D, such as how a model works or what algorithm/methods can be
+   used to achieve X.