A new role :zephyr_file: is available that renders to a link to the file
or folder in GitHub. Find appropriate references using :file: and
convert to :zephyr_file: to take advantage of its linking capability.
Signed-off-by: David B. Kinder <david.b.kinder@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>