docs: fix a markup bug in the Developer Manual

Remove a blank line that messes things up.

Signed-off-by: Sebastian Kuzminsky <seb@highlab.com>
Fix motion-type docs in motion manpage

Signed-off-by: Chris Radek <chris@timeguy.com>

Conflicts:
	docs/man/man9/motion.9
Merge remote-tracking branch 'origin/2.6'