Fix docs ps1 script module errors

luacs-docs/scripts/location.psm1

@@ -0,0 +1,14 @@
+[System.Collections.ArrayList]$Locations = @()
+
+function Change-Location($path) {
+  $loc = Get-Location
+  $Locations.Add($loc) | Out-Null
+  Set-Location $path | Out-Null
+}
+
+function Restore-Location {
+  $idx = $Locations.Count - 1
+  $loc = $Locations[$idx]
+  $Locations.RemoveAt($idx) | Out-Null
+  Set-Location $loc | Out-Null
+}