visidata-ci-build

[docs] update documentation for turning off motd #1023

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Job	Run time
run-tests (3.7)	2m 26s
run-tests (3.8)	2m 48s
run-tests (3.9)	2m 40s
run-tests (3.10)	2m 54s
run-tests (3.11)	2m 45s
	13m 33s