Built-in documentation text width in Lighthouse book #15730

Job	Run time
beacon-chain-tests	16m 43s
check-code	7m 46s
check-msrv	4m 22s
debug-tests-ubuntu	13m 2s
dockerfile-ubuntu	13m 32s
doppelganger-protection-test	21m 57s
ef-tests-ubuntu	10m 52s
eth1-simulator-ubuntu	20m 17s
execution-engine-integration-ubuntu	18m 46s
merge-transition-ubuntu	19m 58s
network-tests	8m 6s
no-eth1-simulator-ubuntu	17m 47s
op-pool-tests	11m 14s
release-tests-ubuntu	23m 37s
release-tests-windows	43m 21s
slasher-tests	1m 13s
state-transition-vectors-ubuntu	2m 51s
syncing-simulator-ubuntu	13m 0s
target-branch-check	1s
cli-check	15m 31s
cargo-udeps	6m 27s
compile-with-beta-compiler	13m 1s
test-suite-success	7s
	5h 3m 31s

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