Updated DirectXTex (markdown)

DirectXTex.md

@@ -155,6 +155,7 @@ These functions provide utility functionality when working with ``DXGI_FORMAT``
 
 ### DXGI format type promoters
 * [[MakeSRGB|FormatPromoters]] - Converts a DXGI format to the sRGB equivalent if any.
+* [[MakeLinear|FormatPromoters]] - Converts a DXGI format to the non-sRGB equivalent.
 * [[MakeTypeless|FormatPromoters]] - Converts a DXGI format to a TYPELESS equivalent if any. This does not modify depth/stencil formats which have multiple 'typeless' mappings.
 * [[MakeTypelessUNORM|FormatPromoters]] - Converts a TYPELESS DXGI format to a UNORM equivalent if any.
 * [[MakeTypelessFLOAT|FormatPromoters]] - Converts a TYPELESS DXGI format to a FLOAT equivalent if any.