Fix `PermissionAccess::isPermissionKeyInUse()`

Fix `PermissionAccess::isPermissionKeyInUse()`

Change from `PermissionAccess::isPermissionKeyInUse()` to
`PermissionAccess::isPermissionAccessInUse()` as there is not method
`isPermissionKeyInUse()` in the `PermissionAccess` class

Throws undefined method error in upgrade from 5.5 series

http://www.concrete5.org/developers/bugs/5-6-1-2/auto-update-wants-to-update-from-5.5.2.1-to-5.6.1.2/