Add examples to index.html

sample/index.html

@@ -38,6 +38,24 @@
         <code>Math</code> inserts mathematical formulas into the editor. You can click the CKEditor 5 Math icon in the toolbar and see the results.
     </p>
 
+    <p>
+        <script type="math/tex">e=mc^2</script>
+    </p>
+
+    <p>
+        <script type="math/tex; mode=display">e=mc^2</script>
+    </p>
+
+    <p>
+       This should show "\test" as ≠ via katexRenderOptions.macros:
+       <script type="math/tex">\test</script>
+    </p>
+
+    <!-- Quill Style Tag -->
+    <p>
+        <span class="ql-formula" data-value="e=mc^2"></span>
+    </p>
+
     <h3>The directory structure</h3>
 
     <p>