Replace footer php in Twenty Twelve theme

Hello,
I was messing around with the footer php code in the Twenty Twelve theme, trying to customize my footer. I should have written down what I was changing. Now nothing is in the footer when I visit the site. I would like to replace the original code, if possible, and try again. The web site is http://www.bethlevinetherapy.com.

Here’s what I have right now:

<?php
/**
 * The template for displaying the footer.
 *
 * Contains footer content and the closing of the
 * #main and #page div elements.
 *
 * @package WordPress
 * @subpackage Twenty_Twelve
 * @since Twenty Twelve 1.0
 */
?>
	</div><!-- #main .wrapper -->
	<footer id="colophon" role="contentinfo">
		<div class="site-info">
			<?php do_action( 'twentytwelve_credits' ); ?>
			<a>" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentytwelve' ); ?>"rel="generator"><?php printf( __( 'Proudly powered by %s', 'twentytwelve' ), 'WordPress' ); ?></a>
		</div><!-- .site-info -->
	</footer><!-- #colophon -->
</div><!-- #page -->

<?php wp_footer(); ?>
</body>
</html>

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