Update groups.json
Update groups.json

Changed json/mousebuttons_copy_paste_screenshot.json to lower case from pascal case.
pqrs-org/KE-complex_modifications,kamykaze/KE-complex_modifications,kamykaze/KE-complex_modifications,pqrs-org/KE-complex_modifications,pqrs-org/KE-complex_modifications,kamykaze/KE-complex_modifications,pqrs-org/KE-complex_modifications,kamykaze/KE-complex_modifications,pqrs-org/KE-complex_modifications,pqrs-org/KE-complex_modifications