libgnt/libgnt

Fix a few documentation issues

2021-07-23, Gary Kramlich
d8762e1bb08e
Fix a few documentation issues

Testing Done:
ran `ninja libgnt-doc`

Reviewed at https://reviews.imfreedom.org/r/824/
REVIEWBOARD_URL = "https://reviews.imfreedom.org/"
REPOSITORY = "libgnt/libgnt"
REPOSITORY_TYPE = "mercurial"
BRANCH = "default"
LAND_DEST_BRANCH = "default"
LAND_PUSH = False