Minor update for Mouse/Keyboard header #354

Job	Run time
build (x64-Debug-UWP-Clang, amd64)	2m 1s
build (x64-Release-UWP-Clang, amd64)	2m 16s
build (x64-Debug-UWP, amd64)	1m 13s
build (x86-Release-UWP, amd64_x86)	1m 25s
build (x86-Debug-UWP, amd64_x86)	1m 21s
build (x86-Release-UWP-Clang, amd64_x86)	2m 9s
build (x86-Debug-UWP-Clang, amd64_x86)	1m 59s
build (arm64-Release-UWP, amd64_arm64)	1m 20s
build (arm64-Release-UWP-Clang, amd64_arm64)	2m 22s
build (arm64-Debug-UWP, amd64_arm64)	1m 20s
build (arm64-Debug-UWP-Clang, amd64_arm64)	2m 4s
build (x64-Release-UWP, amd64)	1m 22s
	20m 52s

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