fix: add link to searchable list materializecss#225

pug/page-contents/icons_content.html

@@ -3,7 +3,7 @@
     <div class="col s12 m8 offset-m1 xl7 offset-xl1">
 
     <div id="usage" class="scrollspy">
-            <p class="caption">We use Google Material Icons by Google. They provide a searchable list (which we do not include in the documentation here), which will also show you the relevant icon names for the CSS classes. You can download the icons directly from the <a href="https://google.github.io/material-design-icons/#icon-font-for-the-web">Material Design specs</a>.</p>
+            <p class="caption">We use Google Material Icons by Google. They provide a <a href="https://jossef.github.io/material-design-icons-iconfont/">searchable list<a> (which we do not include in the documentation here), which will also show you the relevant icon names for the CSS classes. You can download the icons directly from the <a href="https://google.github.io/material-design-icons/#icon-font-for-the-web">Material Design specs</a>.</p>
             <h3 class="header">Usage</h3>
             <p>To be able to use these icons, you must include this line in the <code class="language-markup">&lt;head></code>portion of your HTML code</p>
             <pre><code class="language-markup">