Change the h1 title of the site wide contact form page

Hey,

I am developing a site for some clients and they want the title on the sitewide contact form to be changed from "Contact" to "Contact Us." Presumably I figured I would just go into the contact.module file, and do a case sensitive search for "Contact," and where I found it I would add an "Us" afterwards. I am specificially referring to the H1 title tag on the contact form (/contact) page itself. I found two instances where this code existed, on line 88:

$items[] = array('path' => 'contact',
'title' => t('Contact Us'),
'callback' => 'contact_site_page',
'access' => user_access('access site-wide contact form'),
'type' => MENU_SUGGESTED_ITEM,
);

the other right below it, starting on line 95.

But after updating and uploading the module file, nothing changes. I can't figure out where that title tag is coming from and how I can change it. I don't mind updating code to do it, but my clients are adamant about it being changed and I don't know what to tell them.

Any thoughts?

Thanks!