Fixed #16985 -- corrected a few grammar errors in the docs.
Fixed #16985 -- corrected a few grammar errors in the docs.

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@16925 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django