Fix API documentation syntax
Fix API documentation syntax

 - Drop unneeded definition for offlineimap.globals module.
 - Avoid hyperlinking the section from itself.

Signed-off-by: Eygene Ryabinkin <9f2104e8f86374257270d0eb74ac82c1c7e1ca3c@codelabs.ru>

frioux/offlineimap,frioux/offlineimap