jcm-2 -> jcm2

The bulk update request #83 has been approved by @DontTouchMyCogs.

create alias [[jcm-2]] -> [[jcm2]]

We have two tags for same artist

aliases are broken so im going to wait for the owner to fix before approving

The bulk update request #83 (forum #2346) has been approved by @DontTouchMyCogs.