Update docs/contributing/rebrand-feature-flag.md

Co-authored-by: seaemsi <50173207+seaemsi@users.noreply.github.com>

Author: owenatgov

docs/contributing/rebrand-feature-flag.md

@@ -6,7 +6,7 @@ While we work on the rebrand of GOV.UK Frontend, you can use the feature flag to
 
 ## How to use the UI
 
-You can see the feature flag toggling UI at the top of most pages in the review app as a details element. It does not appear on component previews. When you open it, you'll see a form with a checkbox labelled 'rebrand feature flag on'. By checking this box and clicking 'submit', you'll reload the page. If you're looking at a page on the review app with components impacted by the rebrand eg: the header, you'll see the rebranded version of that component. Unchecking it and resubmitting the form will turn the feature flag off.
+You can see the feature flag toggling UI at the top of most pages in the review app as a Details element. It does not appear on component previews. When you open the toggling UI, you'll see a form with a checkbox labelled 'rebrand feature flag on'. By checking this box and clicking **Submit**, you'll reload the page. If you're looking at a page on the review app with components impacted by the rebrand, such as the header, you'll see the rebranded version of that component. Unchecking the box and resubmitting the form will turn the feature flag off.
 
 Additionally, when on a component landing page eg: '/components/header', you can click the link just under the feature flag form labelled 'show all flag states'. Clicking this will show two example iframes for each component example, one with the new brand and one with the old brand. Clicking the link again or navigating to a new page will turn this feature off.