docs: Minor fixes to CHANGELOG.md #1201

Job	Run time
Build with no-std	14s
Check tokio02 feature	30s
Check io_safety feature (ubuntu-latest)	16s
Check io_safety feature (windows-latest)	1m 26s
Build and test (ubuntu-latest, nightly)	1m 14s
Checking fmt and docs	37s
Build and test (ubuntu-latest, beta)	1m 43s
Check wasm targets (nightly)	30s
Build and test (ubuntu-latest, stable)	1m 48s
Cross compile (i686-unknown-linux-gnu)	1m 52s
Check wasm targets (beta)	41s
Build and test (windows-latest, nightly)	2m 53s
Check wasm targets (stable)	37s
Cross compile (powerpc-unknown-linux-gnu)	2m 0s
Build and test (windows-latest, beta)	2m 40s
Cross compile (powerpc64-unknown-linux-gnu)	1m 58s
Build and test (windows-latest, stable)	2m 49s
Cross compile (arm-linux-androideabi)	3m 27s
Build and test (macOS-latest, nightly)	1m 12s
Build and test (macOS-latest, beta)	1m 27s
Build and test (macOS-latest, stable)	1m 10s
	31m 4s

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