Update Installing-PowerShell-Core-on-macOS.md (#4267)

This pull request:

- suggests the first section of this article to show links for the instructions on the installation without brew.
- is in regard to https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell-core-on-macos.

I am grateful for this document and for the community. Best regards,

reference/docs-conceptual/install/Installing-PowerShell-Core-on-macOS.md

@@ -14,6 +14,7 @@ After the package is installed, run `pwsh` from a terminal.
 
 [Homebrew][brew] is the preferred package manager for macOS.
 If the `brew` command is not found, you need to install Homebrew following [their instructions][brew].
+Otherwise you may install PowerShell via [Direct Download](#installation-via-direct-download) or from [Binary Archives](#binary-archives).
 
 ## Installation of latest stable release via Homebrew on macOS 10.12 or higher