Fix typo

third_party/duckstation/windows_headers.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN 1
+#endif
+#ifndef NOMINMAX
+#define NOMINMAX 1
+#endif
+
+// require vista+
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#endif
+#define _WIN32_WINNT _WIN32_WINNT_VISTA
+
+#include <windows.h>
+
+#if defined(CreateDirectory)
+#undef CreateDirectory
+#endif
+#if defined(CopyFile)
+#undef CopyFile
+#endif
+#if defined(DeleteFile)
+#undef DeleteFile
+#endif