Update dotnet-install.ps1 (#557)

Author: mmitche

src/dotnet-install.ps1

@@ -72,7 +72,7 @@
 .PARAMETER Verbose
     Displays diagnostics information.
 .PARAMETER AzureFeed
-    Default: https://dotnetcli.azureedge.net/dotnet
+    Default: https://builds.dotnet.microsoft.com/dotnet
     For internal use only.
     Allows using a different storage to download SDK archives from.
     This parameter is only used if $NoCdn is false.
@@ -1398,4 +1398,4 @@ Measure-Action "Setting up shell environment" { Prepend-Sdk-InstallRoot-To-Path
 Say "Note that the script does not ensure your Windows version is supported during the installation."
 Say "To check the list of supported versions, go to https://learn.microsoft.com/dotnet/core/install/windows#supported-versions"
 Say "Installed version is $($DownloadedLink.effectiveVersion)"
-Say "Installation finished"
+Say "Installation finished"