Add a filter so consumers can add links to the problem area.

class-two-factor-core.php

@@ -835,6 +835,7 @@ public static function login_html( $user, $login_nonce, $redirect_to, $error_msg
 							</a>
 						</li>
 					<?php endforeach; ?>
+					<?php echo apply_filters( 'two_factor_login_support_links', '' ); ?>
 				</ul>
 			</div>
 		<?php endif; ?>