[IMP] website: change link for google analytics tracking ID

closes #19730

addons/website/static/src/xml/website.backend.xml

@@ -93,7 +93,7 @@
 
     <div t-name="website.ga_dialog_content">
         Your Tracking ID: <input type="text" name="ga_analytics_key" placeholder="UA-XXXXXXXX-Y" t-att-value="ga_analytics_key" style="width: 100%"></input>
-        <a href="https://www.odoo.com/documentation/user/online/website/optimize/google_analytics_dashboard.html" class="oe_link fa fa-arrow-right" target="_blank">
+        <a href="https://www.odoo.com/documentation/user/online/website/optimize/google_analytics.html" class="oe_link fa fa-arrow-right" target="_blank">
             How to get my Tracking ID
         </a>
         <br/><br/>