chore: docs for custom queries #1194

Job	Run time
ash-ci / mix deps.get	17s
ash-ci / audit	41s
ash-ci / MIX_ENV=test mix.compile	43s
ash-ci / MIX_ENV=dev mix.compile	28s
ash-ci / mix docs	27s
ash-ci / mix format --check-formatted	38s
ash-ci / mix spark.formatter --check	36s
ash-ci / mix credo --strict	38s
ash-ci / mix sobelow	41s
ash-ci / mix spark.cheat_sheets --check	46s
ash-ci / mix deps.unlock --check-unused	37s
ash-ci / mix ash.codegen --check	0s
ash-ci / mix dialyzer	3m 48s
ash-ci / mix test	1m 24s
ash-ci / Deploy docs to GitHub pages.	8s
ash-ci / Release	0s
	11m 52s

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