Minor documentation fixes in Extending Review Board section
Review Request #7846 — Created Jan. 5, 2016 and submitted
Correct several minor issues in documentation, primarily related to cross-references. Also add a missing word in the Static Files page.
Built docs and observed that cross-references now render correctly.
Tool: PEP8 Style Checker Processed Files: reviewboard/reviews/fields.py Ignored Files: docs/manual/extending/extensions/configuration.rst docs/manual/extending/extensions/distribution.rst docs/manual/extending/extensions/static-files.rst Tool: Pyflakes Processed Files: reviewboard/reviews/fields.py Ignored Files: docs/manual/extending/extensions/configuration.rst docs/manual/extending/extensions/distribution.rst docs/manual/extending/extensions/static-files.rst