configure: Fix libplist cython availability check to point to correct pkg-config file
configure: Fix libplist cython availability check to point to correct pkg-config file

libimobiledevice-win32/libimobiledevice,libimobiledevice/libimobiledevice,libimobiledevice-win32/libimobiledevice,libimobiledevice-win32/libimobiledevice,libimobiledevice/libimobiledevice,libimobiledevice-win32/libimobiledevice