[hitori] (3 commits) Non-fast-forward update to branch 15-docs

[Philip Withnall <pwithnall src gnome org>]

The branch '15-docs' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  c747251... help: Update the help to mention the header bar and burger 
  fab7083... help: Update header bar buttons mentioned in the help

Commits added to the branch:

  68b8011... help: Update the help to mention the header bar and burger 
  e26e944... help: Update header bar buttons mentioned in the help
  489db61... help: Make terminology around tagging more consistent