docs: bump version in getting started doc

Author: ghiscoding

packages/demo/src/getting-started.html

@@ -24,7 +24,7 @@ <h5>CDN</h5>
       <pre>
 &lt;script <span style="color:#207eb1">type</span>=&quot;<span style="color:#f06605">module</span>&quot;&gt;
   // ESM Module import
-  <span style="color:#cf222e">import</span> multipleSelect <span style="color:#cf222e">from</span> <span style="color:#0a3069">'https://cdn.jsdelivr.net/npm/multiple-select-vanilla@5.0.0/+esm'</span>;
+  <span style="color:#cf222e">import</span> multipleSelect <span style="color:#cf222e">from</span> <span style="color:#0a3069">'https://cdn.jsdelivr.net/npm/multiple-select-vanilla@5.1.0/+esm'</span>;
 &lt;/script&gt;
 </pre>
     </div>