use correct apostrophe on 404 page

src/partials/article.hbs

@@ -2,7 +2,7 @@
 {{#if (eq page.layout '404')}}
 <h1>{{{or page.title 'Page Not Found'}}}</h1>
 <div class="paragraph">
-<p>The page you're looking for does not exist. It may have been moved.</p>
+<p>The page you&#8217;re looking for does not exist. It may have been moved.</p>
 </div>
 <div class="paragraph">
 <p>If you arrived on this page by clicking on a link, please notify the owner of the site that the link is broken.