Added x86 and arm64 architectures for Firefox version 77.0. (#9651)

manifests/m/Mozilla/Firefox/77.0/Mozilla.Firefox.yaml

@@ -1,20 +1,7 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.version.1.0.0.schema.json
 PackageIdentifier: Mozilla.Firefox
-Publisher: Mozilla
-PackageName: Firefox
-ShortDescription: Mozilla Firefox is free and open source software, built by a community of thousands from all over the world.
-PackageUrl: https://www.mozilla.org/en-US/firefox/new/
-Tags:
-- Browser
-- Mozilla
-- Firefox
-License: Mozilla Public License Version 2.0
-LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
-PackageVersion: 77.0
-InstallerType: msi
-Installers:
-- Architecture: x64
-  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/firefox/releases/77.0/win64/en-US/Firefox%20Setup%2077.0.msi
-  InstallerSha256: 60D3DA66D53A8882055C7EC1B38EF862A8022E23A18BCFBA443E19122A5D581C
-PackageLocale: en-US
-ManifestType: singleton
+PackageVersion: "77.0"
+DefaultLocale: en-US
+ManifestType: version
 ManifestVersion: 1.0.0
+