Documentation improvements
Documentation improvements

- Make the explanation of the usecase for repword more clear
- Fix a reference to the repword opcode

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