am: fix signoff when other trailers are present

diff --git a/templates/hooks--pre-rebase.sample b/templates/hooks--pre-rebase.sample
index 053f1111c0d734c057e895cdc992188104cc4f84..b7f81c198e22e4ce578a6148fa3346becabbfb3b 100755 (executable)
--- a/templates/hooks--pre-rebase.sample
+++ b/templates/hooks--pre-rebase.sample
@@ -88,9 +88,7 @@ else
        exit 1
 fi
 
-exit 0
-
-################################################################
+<<\DOC_END
 
 This sample hook safeguards topic branches that have been
 published from being rewound.
@@ -167,3 +165,5 @@ To compute (2):
        git rev-list master..topic
 
        if this is empty, it is fully merged to "master".
+
+DOC_END