[PATCH] Typo fix

[Dongsheng Song]

# HG changeset patch
# User Dongsheng Song <dongsheng.song at gmail.com>
# Date 1236235453 -28800
# Node ID eeaceda3c330b040ba9e4fef4a8cc4bf5e347060
# Parent  6542be5df71969ab4b2942539bfb86d3cca07f17
Typo fix

diff --git a/mercurial/help.py b/mercurial/help.py
--- a/mercurial/help.py
+++ b/mercurial/help.py
@@ -98,7 +98,7 @@
 HG::
     Path to the 'hg' executable, automatically passed when running hooks,
     extensions or external tools. If unset or empty, this is the hg
-    exutable's name if it's frozen, or an executable named 'hg'
+    executable's name if it's frozen, or an executable named 'hg'
     (with %PATHEXT% [defaulting to COM/EXE/BAT/CMD] extensions on
     Windows) is searched.