docs: clarify fetch request de-duplication (#52100)

Co-authored-by: Lee Robinson <me@leerob.io>

docs/02-app/01-building-your-application/03-data-fetching/index.mdx

@@ -76,7 +76,7 @@ If you need to fetch the same data (e.g. current user) in multiple components in
 
 > **Good to know**:
 >
-> - `POST` requests are not automatically deduplicated. [Learn more about caching](/docs/app/building-your-application/data-fetching/caching).
+> - `fetch` requests are automatically deduplicated [under the following conditions](/docs/app/building-your-application/data-fetching/caching).
 > - If you're unable to use `fetch`, React provides a [`cache` function](/docs/app/building-your-application/data-fetching/caching#react-cache) to allow you to manually cache data for the duration of the request.
 
 ## Static and Dynamic Data Fetching