Fix a test with oe
Fix a test with oe

According to Lars oe translates to 135-15, see
https://github.com/liblouis/liblouis/pull/1103#issuecomment-907850045

liblouis/liblouis,hammera/liblouis,hammera/liblouis,liblouis/liblouis,BueVest/liblouis,hammera/liblouis,BueVest/liblouis,hammera/liblouis,BueVest/liblouis,BueVest/liblouis,hammera/liblouis,BueVest/liblouis,liblouis/liblouis,liblouis/liblouis,liblouis/liblouis,BueVest/liblouis,liblouis/liblouis,hammera/liblouis