Commit ddadd3db49 changed
the heading levels of various sections, but as a result,
the "daemon configuration file" section (and other sections)
changed from a H2 to a H4, therefore no longer showing
up in the page's TOC / navigation bar.
This patch changes the heading level to a H3 for
sections that should show up in the page navigation.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit aca0421eb8)
Signed-off-by: Andrew Hsu <andrewhsu@docker.com>
792e8f9a82