fix: fix anchor links to top level sections in ex_doc search #953

Job	Run time
ash-ci / mix igniter.upgrade	3s
ash-ci / audit	51s
ash-ci / mix deps.get	13s
ash-ci / MIX_ENV=test mix.compile	39s
ash-ci / mix docs	1m 4s
ash-ci / mix format --check-formatted	26s
ash-ci / mix spark.cheat_sheets --check	28s
ash-ci / mix spark.formatter --check	4s
ash-ci / mix credo --strict	3s
ash-ci / mix sobelow	36s
ash-ci / mix ash.codegen --check	0s
ash-ci / mix deps.unlock --check-unused	36s
ash-ci / MIX_ENV=dev mix.compile	34s
ash-ci / mix dialyzer	2m 47s
ash-ci / mix test	1m 8s
ash-ci / Deploy docs to GitHub pages.	7s
ash-ci / NIF ${{ matrix.nif }} - ${{ matrix.job.target }} (${{ matrix.job.os }})	0s
ash-ci / Release	0s
	9m 39s

Provide feedback