el.tbl: change some metadata back to "#-" format
el.tbl: change some metadata back to "#-" format

It used to be like this but for some reason it was changed to "#+" in
commit 6616704 (probably by accident). The "#+" format may not be used
for metadata with spaces. This mistake wasn't noticed before because
the check_metadata test was broken.

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