style guide tweak

Author: kodster28

src/content/docs/style-guide/documentation-content-strategy/content-types/changelog.mdx

@@ -70,7 +70,7 @@ Each entry will be its own MDX file, similar to the following.
 ---
 title: Account-level DNS analytics now available via GraphQL Analytics API
 description: Authoritative DNS analytics can now be accessed on the account level via the GraphQL Analytics API.
-date: 2025-06-19T12:00:00Z
+date: 2025-06-19
 ---
 
 Authoritative DNS analytics are now available on the **account level** via the [Cloudflare GraphQL Analytics API](/analytics/graphql-api/).