git cl upload: fix confusing warning.

R=machenbach@chromium.org
BUG=718264

Change-Id: Id238a53dbc22b94010b0eb22263de824da300fbd
Reviewed-on: https://chromium-review.googlesource.com/501809Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>

git_cl.py

@@ -2416,7 +2416,7 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
           '           %s\n'
           '        Consider running the following command:\n'
           '          git cl creds-check\n'
-          '        New credentials can be obtained by visiting %s') %
+          '        %s') %
           (git_host, self._gerrit_host,
            cookie_auth.get_new_password_message(git_host)))
       if not force: