am doc: add a pointer to relevant hooks

diff --git a/git-rebase--am.sh b/git-rebase--am.sh
index 34e3102fcbfa64ec101c1fe009c9b14a5976e4c2..a4f683a5d70213151f3713cc0a2d76dfe8293fd3 100644 (file)
--- a/git-rebase--am.sh
+++ b/git-rebase--am.sh
@@ -1,4 +1,5 @@
-#!/bin/sh
+# This shell script fragment is sourced by git-rebase to implement
+# its default, fast, patch-based, non-interactive mode.
 #
 # Copyright (c) 2010 Junio C Hamano.
 #