update broken selector playground link in v12.4.0 (#5105)

Co-authored-by: Emily Rohrbough <[email protected]>

Author: mysticdevx

docs/guides/references/changelog.mdx

@@ -332,8 +332,8 @@ _Released 1/24/2023_
   configured to exclude files with those extensions. Addresses
   [#24495](https://github.com/cypress-io/cypress/issues/24495).
 - Added support for the `data-qa` selector in the
-  [Selector Playground](guides/core-concepts/cypress-app#Selector-Playground) in
-  addition to `data-cy`, `data-test` and `data-testid`. Addresses
+  [Selector Playground](/api/cypress-api/selector-playground-api) in addition to
+  `data-cy`, `data-test` and `data-testid`. Addresses
   [#25305](https://github.com/cypress-io/cypress/issues/25305).
 
 **Bugfixes:**