docs: Rewrite docs for consistent format with other Ash packages (#138) #525

Job	Run time
ash-ci / mix deps.get	18s
ash-ci / audit	51s
ash-ci / MIX_ENV=dev mix.compile	32s
ash-ci / MIX_ENV=test mix.compile	43s
ash-ci / mix docs	36s
ash-ci / mix format --check-formatted	41s
ash-ci / mix spark.formatter --check	33s
ash-ci / mix spark.cheat_sheets --check	32s
ash-ci / mix sobelow	34s
ash-ci / mix test	1m 19s
ash-ci / mix deps.unlock --check-unused	41s
ash-ci / mix dialyzer	3m 38s
ash-ci / mix credo --strict	31s
ash-ci / Deploy docs to GitHub pages.	7s
ash-ci / Release	0s
	11m 36s

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