Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: meichthys

projects.json

@@ -108,7 +108,7 @@
             "branch": "master",
             "logo_url": "https://github.com/xemle/home-gallery/blob/master/packages/webapp/public/logo.svg",
             "logo_alt": "HomeGallery Logo",
-            "demo_url": "https://demo.home-gallery.org/https://demo.photoprism.app/library/brow",
+            "demo_url": "https://demo.home-gallery.org/",
             "demo": "6",
             "freeness": "10",
             "automatic_mobile_upload": "x",