add docs.jl #2

Job	Run time
Julia 1.6 - ubuntu-latest - x64 - push	7m 52s
Julia 1.6 - macOS-latest - x64 - push	11m 29s
Julia 1.6 - windows-latest - x64 - push	17m 33s
Julia 1.7 - ubuntu-latest - x64 - push	10m 44s
Julia 1.7 - macOS-latest - x64 - push	11m 26s
Julia 1.7 - windows-latest - x64 - push	15m 56s
Julia 1.8 - ubuntu-latest - x64 - push	7m 58s
Julia 1.8 - macOS-latest - x64 - push	12m 48s
Julia 1.8 - windows-latest - x64 - push	17m 56s
Julia nightly - ubuntu-latest - x64 - push	7m 26s
Julia nightly - macOS-latest - x64 - push	9m 51s
Julia nightly - windows-latest - x64 - push	13m 19s
build_docs	7m 20s
	2h 31m 38s

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