message: Fix add-tracks-to-playlist endpoint
diff: @@ -708,16 +708,14 @@ impl Spotify {
  /// Adds tracks to a playlist.
  ///
  /// Parameters:
  - /// - user_id - the id of the user
  /// - playlist_id - the id of the playlist
  /// - track_ids - a list of track URIs, URLs or IDs
  /// - position - the position to add the tracks
  ///
  /// [Reference](https://developer.spotify.com/web-api/add-tracks-to-playlist/)
  #[maybe_async]
  - pub async fn user_playlist_add_tracks(
  + pub async fn playlist_add_tracks(
  &self,
  - user_id: &str,
  playlist_id: &str,
  track_ids: &[String],
  position: Option<i32>,
  @@ -731,7 +729,7 @@ impl Spotify {
  if let Some(position) = position {
  json_insert!(params, "position", position);
  }
  - let url = format!("users/{}/playlists/{}/tracks", user_id, plid);
  + let url = format!("playlists/{}/tracks", plid);
  let result = self.post(&url, None, &params).await?;
  self.convert_result(&result)
  }
  