httprepo: lowercase debug output

mercurial/httprepo.py

@@ -103,7 +103,7 b' class httprepository(repo.repository):'
         if not (proto.startswith('application/mercurial-') or
                 proto.startswith('text/plain') or
                 proto.startswith('application/hg-changegroup')):
-            self.ui.debug(_("Requested URL: '%s'\n") % cu)
+            self.ui.debug(_("requested URL: '%s'\n") % cu)
             raise error.RepoError(_("'%s' does not appear to be an hg repository")
                                   % self._url)