feat: change start_url for PWA

Author: emp74ark

public/manifest.webmanifest

@@ -5,7 +5,7 @@
   "description": "RSS reader",
   "display": "standalone",
   "scope": "./",
-  "start_url": "./articles",
+  "start_url": "/articles",
   "categories": [
     "news"
   ],