Update Spotify attribution text.

src/ui/about.cpp

@@ -81,9 +81,9 @@ QString About::MakeHtml() const {
   ret += QString("<br /><a href=\"http://hyperboleandahalf.blogspot.com\">Allie Brosh</a></p>");
 
 #ifdef HAVE_SPOTIFY
-  ret += "<p>This product uses SPOTIFY(R) CORE but is not endorsed, certified "
-         "or otherwise approved in any way by Spotify. Spotify is the "
-         "registered trade mark of the Spotify Group.</p>";
+  ret += "<p>This product uses Music by Spotify but is not endorsed, certified "
+         "or otherwise approved in any way by Spotify. Spotify is the registered "
+         "trade mark of the Spotify Group.</p>";
 #endif // HAVE_SPOTIFY
 
   return ret;