[Cache] Update purge-by-single-file.mdx (#24595)

To purge assets stored in cache through Cache API operations.

Author: nenizera

src/content/docs/cache/how-to/purge-cache/purge-by-single-file.mdx

@@ -38,6 +38,8 @@ Always use UTF-8 encoded URLs for single-file cache purges. Wildcards are not su
 
 :::note
 For information on how to use single-file purge to purge assets cached by a Workers fetch, refer to [Single file purge assets cached by a Worker](/workers/reference/how-the-cache-works/#single-file-purge-assets-cached-by-a-worker).
+
+For information on how to purge assets cached by [Cache API](/workers/runtime-apis/cache/) operations, refer to [Purge assets stored with the Cache API](/workers/reference/how-the-cache-works/#purge-assets-stored-with-the-cache-api).
 :::
 
 :::caution