SSL was renamed into TLS long ago. Some people still continue using term SSL when referring to it though actually it's TLS.
Do you think that it's a good idea to rename tag ssl into tls?
From the Wikipedia TLS page:
TLS is an IETF standards track protocol, last updated in RFC 5246, and is based on the earlier SSL specifications developed by Netscape Communications
TLS 1.2 is the current version, which is based on SSL 3.0
For all practical purposes, TLS 1.2 and SSL 3 are treated as interchangeable, but as earlier versions are still in use, I don't think a tag synonym is appropriate.