Change manifest filename

Wrong content type on 5apps

index.html

@@ -12,7 +12,7 @@
     <meta name="theme-color" content="#333333">
 
     <!-- PWA Manifest -->
-    <link rel="manifest" href="/manifest.webmanifest">
+    <link rel="manifest" href="/web-app-manifest.json">
 
     <!-- Icons -->
     <link rel="icon" href="/icons/icon.svg" type="image/svg+xml">