keyword PROGMEM is stated twice

[WolfgangArndt]

https://github.com/bitbank2/OneBitDisplay/blob/5d3d41b6de167f7bc51228f4710f78a31b6c8002/src/obd.inl#L1043

there should be only one "PROGMEM" keyword in this line, otherwise the compiler (at least the build chain in platform.io) will give following error: .pio\libdeps\d1_mini_pro\OneBitDisplay\src\obd.inl:776:15: error: section of 'st7302_wenting' conflicts with previous declaration

release used: 2.3.1