Artists and managers can now add links to their accounts on Facebook, Twitter, Instagram and Wikepedia on their Spotify profile from within the Spotify for Artists web app. Links will show up in the About tab for listeners and fans. From Spotify “the curiosity of any listener who’s hungry to know where you were born, what scenery is inspiring your music, or what you had for breakfast.”
Spotify does still not allow artists to add website links where artists could start owning their traffics and fans.
As of today, artists can add their socials to Spotify at https://artists.spotify.com , so go do it!