maint: fix documentation linting script and add to CI #66

Job	Run time
call-build-macos / build-macos	1m 32s
call-build-alpine / build-alpine	2m 7s
call-build-fedora / build-fedora	1m 57s
call-build-solaris / build-solaris	5m 38s
call-build-ubuntu / build-ubuntu	23s
	11m 37s

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