Update "Hidden Strife" link/image

Author: Tibowl

src/data/events.json

@@ -1519,7 +1519,8 @@
     {
         "name": "Hidden Strife",
         "type": "In-game",
-        "img": "https://i.imgur.com/d3yEzxX.png",
+        "link": "https://www.hoyolab.com/article/6171423",
+        "img": "https://upload-os-bbs.hoyolab.com/upload/2022/07/25/1015537/8a890c5db0510673bc0231b6b5af2c51_3950982298211765967.jpg",
         "start": "2022-07-27 10:00:00",
         "end": "2022-08-15 03:59:00",
         "reminder": "end"