s3: docs: Fix "strict rename" doc to match code.

s3: docs: Fix "strict rename" doc to match code.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11065

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Nov 24 23:47:19 CET 2015 on sn-devel-104

(cherry picked from commit 2b0df3788aaadcf907de15a6b6a518244c59aa81)

Autobuild-User(v4-3-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-3-test): Wed Jun 22 16:34:25 CEST 2016 on sn-devel-104