Fix typo in git-crup.

git-crup

 #!/bin/sh
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # A convenience script to largely replicate the behavior of `gclient sync` in a
 # submodule-based checkout.  Fetches latest commits for top-level solutions;
 # updates submodules; and runs post-sync hooks.
 
 j=10
 ECHO=
 pull=pull
 pull_args=
 hooks=yes
 
 usage() {
   cat <<EOF 1>&2
-Usage: git-cr-sync [-n|--dry-run] [--fetch] [-j|--jobs [jobs]]
+Usage: git-crup [-n|--dry-run] [--fetch] [-j|--jobs [jobs]]
     [--no-hooks] [<args to git-pull or git-fetch>]
 EOF
 }
 
 parallel_update() {
   ( echo Entering "$1" &&
     cd "$1" &&
     $ECHO git $pull $pull_args origin &&
     git ls-files -s | grep ^160000 | awk '{print $4}' |
     xargs -L 1 -P "$j" $ECHO git submodule update --init )
@@ skipping 42 matching lines @@
 fi
 
 ls -d */.git |
 while read gitdir; do
   parallel_update `dirname $gitdir`
 done
 
 test "$hooks" = "yes" && test -x src/.git/hooks/deps2hooks.sh &&
 src/.git/hooks/deps2hooks.sh