give docker specific tooltip link (#8197)

Co-authored-by: testa113 <testa113>

app/portainer/components/forms/git-form/git-form-auto-update-fieldset/git-form-auto-update-fieldset.html

@@ -44,7 +44,9 @@
     <label for="repository_mechanism" class="col-sm-3 col-lg-2 control-label text-left">
       Webhook
       <portainer-tooltip
-        message="'See&nbsp;<a href=\'https://docs.portainer.io/user/kubernetes/applications/manifest#automatic-updates\' target=\'_blank\' rel=\'noreferrer\'>Portainer documentation on webhook usage</a>.'"
+        message="$ctrl.environmentType === 'KUBERNETES' ? 
+          'See&nbsp;<a href=\'https://docs.portainer.io/user/kubernetes/applications/manifest#automatic-updates\' target=\'_blank\' rel=\'noreferrer\'>Portainer documentation on webhook usage</a>.' :
+          'See&nbsp;<a href=\'https://docs.portainer.io/user/docker/stacks/webhooks\' target=\'_blank\' rel=\'noreferrer\'>Portainer documentation on webhook usage</a>.'"
         set-html-message="true"
       ></portainer-tooltip>
     </label>