Fix a couple small things in formpost doc string

Change-Id: Idb8d4707180396662493aacbd1f125c4ca43a1ca
Fix trivial typos

Fixes a few typos I have stumbled across recently.

Change-Id: Ib232924f6b23c08578c52a8dd63aaaa8789f9da7
Merge "Fix a couple small things in formpost doc string"
Merge "Fix trivial typos"