Remove minor extra parenthesis in trim docs [ci-skip] (#326)

docs/extras/trim.md

@@ -55,6 +55,6 @@ This method overrides the `pagy_link_proc` using the `pagy_trim` to process the
 
 Sub-method called only by the `pagy_link_proc` method, it removes the the `:page_param` param from the first page link (usually `page=1`).
 
-Override this method if you are [Customizing the urls](../how-to.md#customizing-the-url)).
+Override this method if you are [Customizing the urls](../how-to.md#customizing-the-url).
 
 If you use a `pagy_*nav_js`  helper you should customize the `Pagy.trim` javascript function instead.