add link to github stats app

Author: smhigley

debugging-a11y/index.html

@@ -500,6 +500,7 @@ <h4>With some help:</h4>
 					<div class="steps2">
 						<div class=" step2">
 							<img src="./assets/gh-stats-search.png" alt="A screenshot of a form field collecting github repository URL information for ant-design, under the heading 'Find accessibility stats by github repository'.">
+							<p class="small"><a href="https://github-a11y-stats.netlify.app/">Try it out</a></p>
 						</div>
 						<!--<div class="fragment fade-in-then-out step2">
 							<img src="./assets/gh-stats-labels.png" alt="A screenshot of a github label with the name 'accessibility' and a keyboard emoji under the heading 'Issue labels'." style="width: 60%;">