PYCBC-245: Range view documentation fixups

Change-Id: Icb35f42e599cf6d3d3abe7f086554a20c0eb4423
Reviewed-on: http://review.couchbase.org/36846
Reviewed-by: Matt Ingenthron <matt@couchbase.com>
Tested-by: Mark Nunberg <mnunberg@haskalah.org>