diff -r 3f8273172636 -r fd78276948b4 mercurial/help.py
--- a/mercurial/help.py	Fri Oct 27 21:43:22 2017 +0200
+++ b/mercurial/help.py	Fri Oct 27 18:19:07 2017 +0200
@@ -202,6 +202,8 @@
      loaddoc('censor', subdir='internals')),
     (['changegroups'], _('Changegroups'),
      loaddoc('changegroups', subdir='internals')),
+    (['config'], _('Config Register'),
+     loaddoc('config', subdir='internals')),
     (['requirements'], _('Repository Requirements'),
      loaddoc('requirements', subdir='internals')),
     (['revlogs'], _('Revision Logs'),