Update HDRenderPipeline.cs (#994)

Author: sebastienlagarde

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDRenderPipeline.cs

@@ -835,6 +835,7 @@ void SetRenderingFeatures()
                 , overridesMaximumLODLevel = true
                 , terrainDetailUnsupported = true
                 , overridesShadowmask = true // Don't display the shadow mask UI in Quality Settings
+                , overrideShadowmaskMessage = "\nThe Shadowmask Mode used at run time can be found in the Shadows section of Light component."
                 , overridesRealtimeReflectionProbes = true // Don't display the real time reflection probes checkbox UI in Quality Settings
             };