migrate to v11: add Core docs link

Author: aspeddro

pages/docs/manual/latest/migrate-to-v11.mdx

@@ -64,7 +64,7 @@ Open it so it's available in the global scope.
 
 For a detailed explanation on migration to ReScript Core, please refer to its [migration guide](https://github.com/rescript-association/rescript-core#migration). A semi-automated script is available as well.
 
-**Note**: ReScript Core API docs will be added to this documentation platform at a later stage. For now check out the `.resi` files in the repository or, more conveniently, read the docs for a certain module or function directly in the editor tooling.
+See ReScript Core API docs [here](api/core).
 
 ### Removed bindings