Fix Kitsu URL and and CORS

Fix #1313

README.md

@@ -80,7 +80,7 @@ API | Description | Auth | HTTPS | CORS |
 | [AniList](https://github.com/AniList/ApiV2-GraphQL-Docs) | Anime discovery & tracking | `OAuth` | Yes | Unknown |
 | [AnimeNewsNetwork](https://www.animenewsnetwork.com/encyclopedia/api.php) | Anime industry news | No | Yes | Yes |
 | [Jikan](https://jikan.moe) | Unofficial MyAnimeList API | No | Yes | Yes |
-| [Kitsu](http://docs.kitsu.apiary.io/) | Anime discovery platform | `OAuth` | Yes | Unknown |
+| [Kitsu](https://kitsu.docs.apiary.io/) | Anime discovery platform | `OAuth` | Yes | Yes |
 | [MyAnimeList](https://myanimelist.net/clubs.php?cid=13727) | Anime and Manga Database and Community | `OAuth` | Yes | Unknown |
 | [Studio Ghibli](https://ghibliapi.herokuapp.com) | Resources from Studio Ghibli films | No | Yes | Unknown |
 | [What Anime](https://soruly.github.io/trace.moe/) | Scan anime image to get specific detail | No | Yes | Yes |