remove unused cofig from code

docs/ui/forms/form-input-mask.mdx

@@ -11,7 +11,7 @@ description: An input mask is a used to clarify the input format required in a g
 
 Use an input mask in the fields where users have to enter their phone number, to make the formatting rules clear and help them avoid confusion.
 
-```html example code centered columns={1}
+```html example centered columns={1}
 <label class="form-label">Telephone mask</label>
 <input type="text" name="input-mask" class="form-control" data-mask="(00) 0000-0000" data-mask-visible="true" placeholder="(00) 0000-0000" autocomplete="off" />
 ```