devserver: fixed /api call documentation
devserver: fixed /api call documentation

BUG=None
TEST=New docstring displayed via /doc links

Change-Id: I740d728c817482fbbb27d047ec6e175acfe8f45d
Reviewed-on: https://gerrit.chromium.org/gerrit/34797
Reviewed-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>
Commit-Ready: Gilad Arnold <a0dab390cfdc583218cee97b60c5c4eb1be355d2@chromium.org>
Tested-by: Gilad Arnold <a0dab390cfdc583218cee97b60c5c4eb1be355d2@chromium.org>

marineam/coreos-dev-util,mgireesh05/dev-util,mgireesh05/dev-util,marineam/coreos-dev-util,coreos/dev-util,mgireesh05/dev-util,coreos/dev-util,coreos/dev-util