docs: refresh GitHub About description in metadata and FAQ

.github/repository-metadata.json

@@ -1,6 +1,6 @@
 {
-  "description": "Self-hosted image hosting for your NAS / home server — Nuxt admin UI, local disk storage, server-side WebP compression, referer protection, Twikoo/EasyImage compatible.",
-  "homepage": "https://github.com/O96u/PicHost#readme",
+  "description": "Lightweight self-hosted image hosting — Docker, multi-user, gallery & API, local disk or S3-compatible storage.",
+  "homepage": "https://o96u.github.io/PicHost/",
   "topics": [
     "docker",
     "image-hosting",