fixup! fix: migration docs

Author: jmattheis

docs/migrate-to-3.md

@@ -73,8 +73,9 @@ GOTIFY_SERVER_RESPONSEHEADERS={"X-Custom-Header":"custom value"}
 
 ## API Changes
 
-Gotify 3.x introduces [session elevation](./session-elevation.md). A client
-tokens requires special elevation for sensitive, hard-to-undo actions.
+Introduces step-up authentication via time-limited [session
+elevation](./session-elevation.md). A session/client token must re-authenticate
+before sensitive, hard-to-undo actions.
 
 HTTP Basic auth and application tokens are unaffected.