--- a/mercurial/util.py	Sun Apr 02 22:16:03 2017 +0900
+++ b/mercurial/util.py	Mon Apr 03 19:03:34 2017 -0400
@@ -3705,8 +3705,8 @@
         if not bt or not bt[0]:
             continue
 
-        doc = pycompat.sysstr('``%s``\n    %s' % (
-            bt[0], engine.bundletype.__doc__))
+        doc = pycompat.sysstr('``%s``\n    %s') % (
+            bt[0], engine.bundletype.__doc__)
 
         value = docobject()
         value.__doc__ = doc