Debugger: translate submit button

I used an existing string instead of the "contact support" one

Author: jeherve

class.jetpack-debugger.php

@@ -202,7 +202,7 @@ public static function jetpack_debug_display_handler() {
 
 					<div id="blog_div" class="formbox">
 						<div id="submit_div" class="contact-support">
-						<input type="submit" name="submit" value="Contact Support">
+						<input type="submit" name="submit" value="<?php esc_html_e( 'Submit &#187;', 'jetpack' ); ?>">
 						</div>
 					</div>
 					<div style="clear: both;"></div>