[PATCH stable] help: fix typo in scripting documentation

[Wagner Bruna]

# HG changeset patch
# User Wagner Bruna <wbruna at softwareexpress.com.br>
# Date 1439474976 10800
#      Thu Aug 13 11:09:36 2015 -0300
# Branch stable
# Node ID de4a4f94fcd30419c3f5a336db3f765eb8900729
# Parent  d815a5997576f0ef730e1df2d43c68970643c46b
help: fix typo in scripting documentation

diff --git a/mercurial/help/scripting.txt b/mercurial/help/scripting.txt
--- a/mercurial/help/scripting.txt
+++ b/mercurial/help/scripting.txt
@@ -56,7 +56,7 @@
    incorrectly (often by using "?" as a placeholder for invalid
    characters in the current locale).
 
-   Explcitly setting this environment variable is a good practice to
+   Explicitly setting this environment variable is a good practice to
    guarantee consistent results. "utf-8" is a good choice on UNIX-like
    environments.
 

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