Docs: use Mithril client one line installer in tutorial #6720

Job	Run time
Build specification using nix	2m 23s
Build & test (hydra-plutus)	2m 23s
Benchmarks (hydra-node, tx-cost, --output-directory $(pwd)/../benchmarks)	2m 48s
Build & test (hydra-tui)	4m 2s
Benchmarks (hydra-node, micro, -o $(pwd)/../benchmarks/ledger-bench.html)	2m 19s
Build haddock using nix	1m 48s
Benchmarks (hydra-cluster, bench-e2e, datasets datasets/1-node.json datasets/3-nodes.json --outpu...	4m 47s
Build & test (hydra-node)	9m 55s
Build & test (hydra-tx)	2m 42s
nix flake check	5m 5s
Compute cost differences	4m 3s
Build & test (hydra-cluster)	12m 21s
Publish benchmark results	7s
Publish test results	17s
Documentation	4m 5s
	59m 5s

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