Merge pull request #1487 from daira/improve-doc-for-send-multi-test #1

Job	Run time
Bitrot check	1m 45s
Build target wasm32-wasi	59s
Clippy (MSRV)	1m 25s
Check ZFuture build on Linux	2m 21s
Latest build on ubuntu-latest	2m 35s
Check ZFuture build on macOS	1m 32s
Clippy (beta)	12s
Latest build on windows-latest	5m 32s
Check ZFuture build on Windows	4m 56s
Code coverage	20m 9s
Latest build on macOS-latest	2m 4s
Intra-doc links	2m 34s
Rustfmt	14s
protobuf consistency	1m 10s
Test on Linux	1s
UUID validity	3s
Test Orchard on Linux	1s
Test NU6 on Linux	1s
Test on macOS	12m 49s
Test Orchard on macOS	11m 44s
Test on Windows	1s
Test Orchard on Windows	1s
Test NU6 on Windows	1s
	1h 12m 10s

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