pidgin/nest

Clean up the theming docs as they were causing some issues for users

Testing Done:
Ran `npm run hugo:server` and verified the page rendered fine.

Reviewed at https://reviews.imfreedom.org/r/1522/
REVIEWBOARD_URL = "https://reviews.imfreedom.org/"
REPOSITORY = "pidgin/nest"
REPOSITORY_TYPE = "mercurial"
BRANCH = "default"
LAND_DEST_BRANCH = "default"
LAND_PUSH = False