Merge pull request #10999 from changeworld/patch-1

Fix typo: peferred -> preferred

Author: ghogen

docs/snippets/cpp/VS_Snippets_Misc/wrl-media-capture/cpp/grayscaletransform/grayscaletransform.cpp

@@ -1387,7 +1387,7 @@ HRESULT CGrayscale::ProcessOutput(
 
 // Create a partial media type from our list.
 //
-// dwTypeIndex: Index into the list of peferred media types.
+// dwTypeIndex: Index into the list of preferred media types.
 // ppmt:        Receives a pointer to the media type.
 
 HRESULT CGrayscale::OnGetPartialType(DWORD dwTypeIndex, IMFMediaType **ppmt)