Fixed a typo in the confirmation docs (#856) #1849

Job	Run time
mix deps.get	26s
MIX_ENV=test mix.compile	39s
mix hex.audit	18s
mix dialyzer	44s
mix doctor --full --raise	42s
mix credo --strict	42s
mix git_ops.check_message	29s
mix format --check-formatted	33s
mix ash_postgres.generate_migrations --check	30s
mix sobelow --config	32s
mix spark.cheat_sheets --check	33s
mix spark.formatter --check	29s
mix test	3m 5s
mix deps.unlock --check-unused	30s
MIX_ENV=dev mix.compile	0s
mix docs	0s
Deploy docs to GitHub pages.	0s
	10m 12s

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