Update C42.html

Modify the reference

Author: mbgower

techniques/css/C42.html

@@ -83,7 +83,7 @@ <h3>Expected Results</h3>
 			<h2>Related Techniques</h2>
 			<ul>
 				<li>
-					<a href="technique-using-css-to-ensure-targets-are-at-least-44-by-44-css-pixels">Using CSS to ensure targets are at least 44 by 44 CSS pixels</a>
+					<a href="C44">C44</a>
 				</li>
 			</ul>