Device context: updated documentation #3319

Job	Run time
Linux -> Pre-checks	16s
Linux -> GCC-x64, Debug	11m 34s
Linux -> GCC-x64, Release	10m 45s
Linux -> Clang-x64, Debug	12m 57s
Linux -> Clang-x64, Release	13m 4s
Linux -> Clang-NO_GLSLANG-x64, Debug	8m 2s
Linux -> Clang-NO_GLSLANG-NO_HLSL-x64, Release	5m 58s
	1h 2m 36s

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