polkadot-sdk-docs: Use command_macro! #7081

Job	Run time
preflight / preflight	35s
preflight / ci-versions	1m 0s
test-frame-ui	47m 8s
test-full-crypto-feature	2m 47s
cargo-check-all-crate-macos	11m 52s
cargo-check-benches (master)	21m 6s
cargo-check-each-crate (1)	18m 42s
cargo-check-benches (current)	22m 7s
test-node-metrics	8m 39s
cargo-check-each-crate (2)	19m 34s
cargo-check-each-crate (3)	8m 35s
cargo-check-each-crate (4)	17m 32s
cargo-check-each-crate (5)	24m 19s
cargo-check-each-crate (6)	15m 13s
cargo-check-each-crate (7)	30m 8s
test-frame-examples-compile-to-wasm	3m 5s
test-deterministic-wasm	6m 33s
check-tracing	3m 51s
check-metadata-hash	7m 14s
node-bench-regression-guard	12s
All test misc tests passed	1s
	4h 30m 13s

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