Fix misleading wording about waitlists (#20850)

config/locales/en.yml

@@ -914,7 +914,7 @@ en:
     warning: Be very careful with this data. Never share it with anyone!
     your_token: Your access token
   auth:
-    apply_for_account: Get on waitlist
+    apply_for_account: Request an account
     change_password: Password
     delete_account: Delete account
     delete_account_html: If you wish to delete your account, you can <a href="%{path}">proceed here</a>. You will be asked for confirmation.