Clean up the endpoint filtering configuration docs

There were a few grammatical errors seen in the docs, this patch
should clean those up.

Change-Id: I9815289444763450131fa9cd87f725bfc7a92aa6
render json examples with syntax highlighting

Change-Id: I5727bc7ed967f81ab63b0d031b9a6d6da673da3a
Merge "Clean up the endpoint filtering configuration docs"
Merge "render json examples with syntax highlighting"