Updated to current installer types

As per the [schema 1.7.0](https://github.com/microsoft/winget-pkgs/tree/master/doc/manifest/schema/1.7.0), there are additional supported installer types.

Author: bubbletroubles

hub/package-manager/package/index.md

@@ -11,7 +11,20 @@ This section provides guidance about submission process for contributing package
 
 ## Independent Software Vendor (ISV) or Publisher
 
-If you are an ISV or Publisher, you can use Windows Package Manager as a distribution channel for software packages containing your applications. Windows Package Manager currently supports installers in the following formats: MSIX, MSI, and EXE.
+If you are an ISV or Publisher, you can use Windows Package Manager as a distribution channel for software packages containing your applications. Windows Package Manager currently supports installers in the following formats:  
+
+- appx
+- burn
+- exe
+- inno
+- msi
+- msix
+- msstore
+- nullsoft
+- portable
+- pwa
+- wix
+- zip
 
 To submit software packages to Windows Package Manager, follow these steps: