Update storybook/src/components/FieldSet/FieldSet.docs.mdx

Co-authored-by: Vincent Smedinga <[email protected]>

storybook/src/components/FieldSet/FieldSet.docs.mdx

@@ -31,8 +31,7 @@ A Field Set can indicate whether any of the inputs it contains has a validation
 ### Radio group
 
 Use a Field Set to group radio buttons.
-When grouping radio inputs, use `role="radiogroup"` on Field Set to have this grouping explicitly announced as a radio group.
-Field Set has a default role of `group`.
+When grouping radio inputs, use `role="radiogroup"` on Field Set to have this grouping explicitly announced as a radio group (the default role is `group`).
 
 Using `role="radiogroup"` also allows you to use `aria-required` on Field Set, which isn’t allowed for role `group`.
 Always also set `aria-required` on the individual radio buttons though, to make sure it’s read by screen readers.