Update content/extensions/ui-extensions.md

Co-authored-by: Clovis Péridy <[email protected]>

Author: monikaakeneo

content/extensions/ui-extensions.md

@@ -193,7 +193,7 @@ For example, you can configure a UI extension with the following url `https://ww
 
 Valid placeholders attributes are:
 - `uuid` (for products), `code` (for product models) and other attribute of type `identifier`
-- all text attributes. Links will use the value related to the current locale or channel.
+- all `text` attributes. Links will use the value related to the current locale or channel.
 
 You can add a placeholder anywhere in your url as soon as they're surrounded by `%` symbol.