doc: Completed documenting `fieldx_aux` crate #112

Job	Run time
build_docs	39s
with_features (ubuntu, 1.77, serde)	1m 29s
no_features (ubuntu, 1.77)	1m 8s
with_features (ubuntu, 1.77, send_guard)	1m 10s
no_features (ubuntu, stable)	58s
no_features (ubuntu, beta)	1m 8s
no_features (ubuntu, nightly)	53s
with_features (ubuntu, stable, serde)	1m 29s
no_features (macos, 1.77)	1m 5s
with_features (ubuntu, stable, send_guard)	1m 7s
no_features (macos, stable)	1m 2s
with_features (ubuntu, beta, serde)	1m 29s
no_features (macos, beta)	1m 19s
with_features (ubuntu, beta, send_guard)	1m 6s
no_features (macos, nightly)	52s
with_features (ubuntu, nightly, serde)	1m 6s
no_features (windows, 1.77)	1m 53s
no_features (windows, stable)	3m 42s
with_features (ubuntu, nightly, send_guard)	52s
no_features (windows, beta)	2m 40s
with_features (macos, 1.77, serde)	1m 29s
no_features (windows, nightly)	1m 52s
with_features (macos, 1.77, send_guard)	1m 2s
with_features (macos, stable, serde)	1m 9s
with_features (macos, stable, send_guard)	48s
with_features (macos, beta, serde)	1m 15s
with_features (macos, beta, send_guard)	1m 4s
with_features (macos, nightly, serde)	1m 3s
with_features (macos, nightly, send_guard)	45s
with_features (windows, 1.77, serde)	2m 34s
with_features (windows, 1.77, send_guard)	2m 22s
with_features (windows, stable, serde)	2m 26s
with_features (windows, stable, send_guard)	2m 22s
with_features (windows, beta, serde)	2m 38s
with_features (windows, beta, send_guard)	2m 15s
	52m 11s

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