The VLAN documentation had double wording and proper links to files
in github was missing, which did not look good in the rendered HTML
page.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Move guides and APIs into separate directories and cleanup naming
introducing index files rather than named section files.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>