Update changelog

CHANGELOG.md

@@ -29,6 +29,10 @@
 
   ([PR 824](https://github.com/alphagov/govuk-frontend/pull/824))
 
+- Fix YAML and Nunjucks format inconsistencies
+
+  ([PR 830](https://github.com/alphagov/govuk-frontend/pull/830))
+
 🏠 Internal:
 
 - Fix Design System url in package READMEs and review app
@@ -37,7 +41,7 @@
 - Update back-link example to show default usage doesn't need
   `text` parameter
   ([PR #819](https://github.com/alphagov/govuk-frontend/pull/819))
-  
+
 - Lowercase component names
   ([PR #822](https://github.com/alphagov/govuk-frontend/pull/822))
 
@@ -60,7 +64,7 @@
 🔧 Fixes:
 
 - Reduce margin-bottom on the hint when following a default or small labe
-  This reduces the margin-bottom of the hint by 5px after a default 
+  This reduces the margin-bottom of the hint by 5px after a default
   `<label>` or `<label class="govuk-label--s">`.
   ([PR #806](https://github.com/alphagov/govuk-frontend/pull/806))