Fixed some @params documentation (includes/api)

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: I758fa4ad80ac95e2ddd3770bcb9b7d2e57ec34ea
Merge "Fixed some @params documentation (includes/api)"