Update "Three Realms Gateway Offering" link/img

Author: Tibowl

src/data/events.json

@@ -1103,7 +1103,8 @@
     {
         "name": "\"Three Realms Gateway Offering\" Event",
         "type": "In-game",
-        "img": "https://i.imgur.com/Lj9t8Bt.png",
+        "link": "https://www.hoyolab.com/article/3370633",
+        "img": "https://upload-os-bbs.hoyolab.com/upload/2022/02/14/1015537/a7d417caff8800b39e73cfd2153441a8_3162259087659744231.jpg",
         "start": "2022-02-17 10:00:00",
         "end": "2022-03-30 06:00:00",
         "reminder": "end"