[FEATURE query-params-new] Normalize full name before trying to check in cache (fixes #4420).

We need to use a normalized version of `fullName` otherwise it will
return always the prototype.

The reason is that that keys are always normalized on the cache, we
end up querying for keys like 'controller:post.index' when it is stored
as 'controller.postsIndex'.
Merge pull request #4433 from abuiles/fix-query-params-controller-or-proto

Fix query params controllerOrProto (fixes #4420)
[DOC beta] Fixes type for `options` arg which should be Object and not String
Merge pull request #4438 from shahrukhomar/docs_fix

[DOC] Fixes type for the `options` arg on Application.register