Update links that contain 'en-us' culture (#7013)

Update links that contain 'en-us' culture to remove 'en-us' culture (if possible) and in some cases update to newer re-directed link to docs.microsoft.com

test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1

@@ -345,7 +345,7 @@ function GetMultipartBody {
 <#
     Defines the list of redirect codes to test as well as the
     expected Method when the redirection is handled.
-    See https://msdn.microsoft.com/en-us/library/windows/apps/system.net.httpstatuscode(v=vs.105).aspx
+    See https://docs.microsoft.com/previous-versions/windows/apps/f92ssyy1(v=vs.105)
     for additonal details.
 #>
 $redirectTests = @(

test/powershell/Modules/Microsoft.PowerShell.Utility/assets/localized.ps1

@@ -1,4 +1,4 @@
-# Sample code from https://technet.microsoft.com/en-us/library/hh847854.aspx
+# Sample code from https://docs.microsoft.com/powershell/module/microsoft.powershell.core/about/about_script_internationalization?view=powershell-6&viewFallbackFrom=powershell-Microsoft.PowerShell.Core
 
     $Day = DATA {
 # culture="en-US"