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chore: add helpful statement to justfile and fix a couple typos #91

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Job	Run time
dependencies (1.15.5, 26.0.2)	3m 54s
static-code-analysis (1.15.5, 26.0.2)	25s
test-elixir (1.15.5, 26.0.2)	1m 47s
	6m 6s