[PATCH stable] commands: fix the list of changeset header information in 'hg help export'

[Steve Losh]

# HG changeset patch
# User Steve Losh <steve at stevelosh.com>
# Date 1265462919 18000
# Node ID 3d75c691b77de19e71c34c7d8d5ce4bab46a7f2e
# Parent  ec5240a22f4a8479ac6f58d643a667498eb19eb9
commands: fix the list of changeset header information in 'hg help export'

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1139,7 +1139,7 @@
 
     Print the changeset header and diffs for one or more revisions.
 
-    The information shown in the changeset header is: author,
+    The information shown in the changeset header is: author, date,
     changeset hash, parent(s) and commit comment.
 
     NOTE: export may generate unexpected diff output for merge