(GH-659) Fix: PowerShell Collection is read-only

This bug in PowerShell is in the recent Windows Insider Build regarding
adding multiple aliases separately. You can specify the alias parameter
once and it will work with multiple values. This is a better way of
going about it anyway.

src/chocolatey.resources/helpers/chocolateyScriptRunner.ps1

@@ -3,7 +3,7 @@
   [alias("o","override","overrideArguments","notSilent")]
   [switch] $overrideArgs = $false,
   [alias("x86")][switch] $forceX86 = $false,
-  [alias("params")][alias("parameters")][alias("pkgParams")][string]$packageParameters = '',
+  [alias("params,"parameters","pkgParams")][string]$packageParameters = '',
   [string]$packageScript
 )