docs: update version in getting-started page

Author: ghiscoding

demo/src/getting-started.html

@@ -25,10 +25,10 @@ <h5>CDN</h5>
     <div style="background: #f7f7f7; padding: 10px">
       <pre>
 &lt;!-- Latest compiled and minified CSS --&gt;
-&lt;link href=&quot;<span style="color:#880000">https://cdn.jsdelivr.net/npm/[email protected].2/dist/styles/css/multiple-select.css</span>&quot; rel=&quot;<span style="color:#880000">stylesheet</span>&quot;&gt;
+&lt;link href=&quot;<span style="color:#880000">https://cdn.jsdelivr.net/npm/[email protected].3/dist/styles/css/multiple-select.css</span>&quot; rel=&quot;<span style="color:#880000">stylesheet</span>&quot;&gt;
 
 &lt;!-- Latest compiled and minified JavaScript --&gt;
-&lt;script src=&quot;<span style="color:#880000">https://cdn.jsdelivr.net/npm/[email protected].2/dist/multiple-select.js</span>&quot;&gt;&lt;/script&gt;</pre>
+&lt;script src=&quot;<span style="color:#880000">https://cdn.jsdelivr.net/npm/[email protected].3/dist/multiple-select.js</span>&quot;&gt;&lt;/script&gt;</pre>
     </div>
   </section>