Update README.md #2718

Job	Run time
build-extra-hackages	1m 59s
cabal-doExactConfig	1m 54s
cabal	1m 54s
check-materialization-concurrency	19s
check-path-support	1m 28s
closure-size	4s
docs	1m 33s
haskell-nix-roots-do-not-require-IFDs	1m 32s
hix	40s
hix-cabal	1m 27s
hydra-ifdLevel-0-and-1	3m 3s
hydra-ifdLevel-2	5m 4s
hydra-ifdLevel-3	30m 10s
hydra-without-remote-builders-ghc8107	2m 25s
maintainer-scripts	7s
hydra-without-remote-builders-ghc9101	1m 56s
nix-build	3m 56s
nix-tools	15s
plan-extra-hackages	5s
multi-target	20s
runghc	7s
shellFor-multiple-package	17s
shellFor-hoogle	18s
shellFor-not-depends	17s
shellFor-single-package	17s
tests-benchmarks	14s
unit-tests	6s
update-docs	4s
	1h 1m 51s

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