tests/test-help.t

--- a/tests/test-help.t	Sat Oct 24 19:56:39 2015 +0100
+++ b/tests/test-help.t	Sat Dec 05 23:37:46 2015 -0800
@@ -812,6 +812,8 @@
                  description
    debugdata     dump the contents of a data file revision
    debugdate     parse and display a date
+   debugdeltachain
+                 dump information about delta chains in a revlog
    debugdirstate
                  show the contents of the current dirstate
    debugdiscovery