Fix invalid phpdoc for casted property without return (#1236)

[edgardmessias]

Summary

Fix invalid phpdoc for casted property without return type

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

Checklist

• [ ] Existing tests have been adapted and/or new tests have been added
• [ ] Add a CHANGELOG.md entry
• [ ] Update the README.md
• [ ] Code style has been fixed via composer fix-style

[edgardmessias]

Yes, I can try add some test for this case