Update screenshot

Author: bebound

apps/Venera-Next/config.toml

@@ -20,9 +20,9 @@ subtitle = "跨平台漫画阅读器"
 description = "基于 Flutter 的跨平台漫画阅读器，支持本地漫画、WebDAV 漫画源与第三方网络漫画源，支持 Android、iOS、Windows、Linux、macOS 平台。"
 icon_url = "https://raw.githubusercontent.com/bebound/AltGallery/refs/heads/master/apps/Venera-Next/icon.png"
 screenshots = [
-  "https://raw.githubusercontent.com/bebound/AltGallery/refs/heads/master/apps/Venera-Next/images/home.png",
-  "https://raw.githubusercontent.com/bebound/AltGallery/refs/heads/master/apps/Venera-Next/images/reader.png",
-  "https://raw.githubusercontent.com/bebound/AltGallery/refs/heads/master/apps/Venera-Next/images/detail.png",
+  "https://raw.githubusercontent.com/bebound/AltGallery/refs/heads/master/apps/Venera-Next/images/home.jpg",
+  "https://raw.githubusercontent.com/bebound/AltGallery/refs/heads/master/apps/Venera-Next/images/explorer.jpg",
+  "https://raw.githubusercontent.com/bebound/AltGallery/refs/heads/master/apps/Venera-Next/images/search.jpg",
 ]
 tint_color = "#2090E0"
 min_os_version = "14.0"