--- a/mercurial/help/config.txt	Thu Sep 27 16:55:44 2018 +0200
+++ b/mercurial/help/config.txt	Sun Oct 14 01:39:22 2018 -0400
@@ -2367,7 +2367,7 @@
     to release, but over time the recommended config settings
     shift. Enable this config to opt in to get automatic tweaks to
     Mercurial's behavior over time. This config setting will have no
-    effect if ``HGPLAIN` is set or ``HGPLAINEXCEPT`` is set and does
+    effect if ``HGPLAIN`` is set or ``HGPLAINEXCEPT`` is set and does
     not include ``tweakdefaults``. (default: False)
 
 ``username``