templates: Reformat pre-commit hook's message

Now that we're using heredoc, the message can span the full 80 chars.

Signed-off-by: Richard Hartmann <richih.mailinglist@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

templates/hooks--pre-commit.sample

@@ -34,13 +34,11 @@ then
 	cat <<\EOF
 Error: Attempt to add a non-ascii file name.
 
-This can cause problems if you want to work
-with people on other platforms.
+This can cause problems if you want to work with people on other platforms.
 
 To be portable it is advisable to rename the file.
 
-If you know what you are doing you can disable this
-check using:
+If you know what you are doing you can disable this check using:
 
   git config hooks.allownonascii true
 EOF