Fixed some @params documentation (includes/[cache|objectcache])

Swapped some "$var type" to "type $var" or added missing types
before the $var. Changed some other types to match the more common
spelling. Makes beginning of some text in captial.
Also added some missing @param.

Change-Id: I86fd10e3f2d4bb80e7432533038d124693acfb3c
Merge "Fixed some @params documentation (includes/[cache|objectcache])"