Update README.md #2717

Job	Run time
build-extra-hackages	7s
cabal	9s
check-materialization-concurrency	19s
cabal-doExactConfig	9s
closure-size	7s
check-path-support	5s
docs	21s
haskell-nix-roots-do-not-require-IFDs	9s
hix	25s
hix-cabal	7s
hydra-ifdLevel-0-and-1	2m 24s
hydra-ifdLevel-2	2m 31s
hydra-ifdLevel-3	7m 4s
hydra-without-remote-builders-ghc8107	33s
hydra-without-remote-builders-ghc9101	30s
maintainer-scripts	8s
multi-target	35s
nix-build	30s
nix-tools	15s
plan-extra-hackages	6s
runghc	8s
shellFor-hoogle	7s
shellFor-multiple-package	10s
shellFor-not-depends	12s
shellFor-single-package	17s
tests-benchmarks	7s
unit-tests	4s
update-docs	3s
	17m 42s

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