Make the license header of el.ctb standards compliant
Make the license header of el.ctb standards compliant

i.e. it is already LGPLv2.1+ but the punctuation isn't quite like in
all the other files. That is why the licensecheck tool doesn't
recognize it as LGPLv2.1+.

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