Updated WICFactory (markdown)

WICFactory.md

@@ -12,4 +12,4 @@ void SetWICFactory(IWICImagingFactory* pWIC);
 
 The on-demand WIC factory object is normally not released on exit. To ensure it is released for a 'clean exit' you can use ``SetWICFactory(nullptr);``.
 
-The ``GetWICFactory`` functions is thread-safe.
+The ``GetWICFactory`` function is thread-safe.