Update FluffyChat screenshots (#2000)

Author: dkhamsing

contents.json

@@ -33537,7 +33537,7 @@
         "ipad"
       ],
       "screenshots": [
-        "https://github.com/krille-chan/fluffychat/raw/main/docs/screenshots/mobile.png?raw=true"
+        "https://raw.githubusercontent.com/krille-chan/fluffychat-website/refs/heads/main/src/assets/screenshots/mobile.png"
       ],
       "source": "https://github.com/krille-chan/fluffychat",
       "itunes": "https://apps.apple.com/app/fluffychat/id1551469600",