PHPDoc: Correct some param types
Summary: Type in PHPDoc @param versus type in method signature mismatch. Thus correct PHPDoc.
Test Plan: Read the PHPDoc and the signature and compare types.
Reviewers: O1 Blessed Committers, valerio.bozzolan
Reviewed By: O1 Blessed Committers, valerio.bozzolan
Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno
Differential Revision: https://we.phorge.it/D25977