[gnome-shell] tools: Fix typo in check-for-missing.py

[Bastien Nocera <hadess src gnome org>]

commit b4489d9ea6663906293c4a8b01c0b28a80e9cb25
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Mar 7 02:39:20 2011 +0000

    tools: Fix typo in check-for-missing.py

 tools/check-for-missing.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tools/check-for-missing.py b/tools/check-for-missing.py
index 0a689d7..7fd8c8c 100755
--- a/tools/check-for-missing.py
+++ b/tools/check-for-missing.py
@@ -3,7 +3,7 @@
 # This is a simple script that we use to check for files in git
 # and not in the distribution. It was previously written in shell
 # and inlined in the Makefile.am, but 'git ls-files --exclude=<pattern>'
-# was changed to no longer due anything useful, which made that
+# was changed to no longer do anything useful, which made that
 # too challenging to be worthwhile.
 
 import fnmatch, os, subprocess, sys