Apply suggestions from code review

Co-authored-by: EoinShaughnessy <[email protected]>

CHANGELOG.md

@@ -67,14 +67,14 @@ This change was introduced in [pull request #2323: Avoid invalid nesting of `<sp
 
 We've updated the HTML for the header. This update only affects you if your header includes navigation.
 
-If you are not using Nunjucks macros then you should:
+If you're not using Nunjucks macros, then you should move:
 
-- move the `<button>` inside the `<nav>`, immediately before the `<ul>`
-- move the `aria-label` from the `<ul>` to the `<nav>`
+- the `<button>` inside the `<nav>`, immediately before the `<ul>`
+- the `aria-label` from the `<ul>` to the `<nav>`
 
-Check your changes against [the example in the Design System](https://design-system.service.gov.uk/components/header/#header-with-service-name-and-navigation).
+Check your changes against the [header example in the Design System](https://design-system.service.gov.uk/components/header/#header-with-service-name-and-navigation).
 
-This change was introduced in [pull request #2427: Improvements to the screen reader experience for the menu in the header](https://github.com/alphagov/govuk-frontend/pull/2427).
+This change was introduced in [pull request #2427: Improve the screen reader experience for the header menu](https://github.com/alphagov/govuk-frontend/pull/2427).
 
 #### Make sure components that conditionally reveal other questions still work as expected