Summary:
As per GH-14 comment, the docs were pointing to an internal `private` method to check if `Sonar` should be enabled
Closes https://github.com/facebook/Sonar/pull/23
Reviewed By: danielbuechele
Differential Revision: D8379336
Pulled By: jknoxville
fbshipit-source-id: bc580dc40a1994a2f4a30544d77f86b60e9353f6