Fix tracking code display.

components/forms/TrackingCodeForm.js

@@ -18,7 +18,7 @@ export default function TrackingCodeForm({ values, onClose }) {
           rows={3}
           cols={60}
           spellCheck={false}
-          defaultValue={`<script async defer data-website-id="${values.website_uuid}" src="${document.location.origin}/umami.js" />`}
+          defaultValue={`<script async defer data-website-id="${values.website_uuid}" src="${document.location.origin}/umami.js"></script>`}
           readOnly
         />
       </FormRow>