docs: update readme

README.md

@@ -301,6 +301,7 @@ It offers the following options:
 - `--media-format <MediaFormat>` or `-f <MediaFormat>`
 - `--season <MediaSeason>`
 - `--genres <genre>` or `-g <genre>` can be specified multiple times.
+- `--on-list/--not-on-list`
 
 Example:
 
@@ -310,7 +311,8 @@ fastanime anilist search -T isekai
 
 # get anime of 2024 and sort by popularity
 # that has already finished airing or is releasing
-fastanime anilist search -y 2024 -s POPULARITY_DESC --status RELEASING --status FINISHED
+# and is not in your anime lists
+fastanime anilist search -y 2024 -s POPULARITY_DESC --status RELEASING --status FINISHED --not-on-list
 
 # get anime of 2024 season WINTER
 fastanime anilist search -y 2024 --season WINTER