Update documentation of commentlink to reflect changed URL

Change-Id: Idab148fbbe6d00f3c2835dd842462e44f6cb8c41
diff --git a/Documentation/config-gerrit.txt b/Documentation/config-gerrit.txt
index e21131b..6127036 100644
--- a/Documentation/config-gerrit.txt
+++ b/Documentation/config-gerrit.txt
@@ -1076,7 +1076,7 @@
 ----
 [commentlink "changeid"]
   match = (I[0-9a-f]{8,40})
-  link = "#q,$1"
+  link = "#/q/$1"
 
 [commentlink "bugzilla"]
   match = "(bug\\s+#?)(\\d+)"