Merge pull request #82 from github-for-unity/contributing-tweaks

Fix link to file

Author: shana

docs/contributing/how-to-build.md

@@ -35,7 +35,7 @@ git submodule update
 To be able to authenticate in GitHub for Unity, you'll need to:
 
 - [Register a new developer application](https://github.com/settings/developers) in your profile.
-- Copy [common/ApplicationInfo_Local.cs-example](common/ApplicationInfo_Local.cs-example) to `common/ApplicationInfo_Local.cs` and fill out the clientId/clientSecret fields for your application.
+- Copy [common/ApplicationInfo_Local.cs-example](../../common/ApplicationInfo_Local.cs-example) to `common/ApplicationInfo_Local.cs` and fill out the clientId/clientSecret fields for your application.
 
 The build needs to reference `UnityEngine.dll` and `UnityEditor.dll`. These DLLs are included with Unity. If you've installed Unity in the default location, the build will be able to find them automatically. If not, copy these DLLs from your Unity installation into the `lib` directory in order for the build to work.