DOC add vector field in MSA example #424

Job	Run time
call-test / test (windows-latest)	6m 25s
call-test / test (ubuntu-24.04-arm)	2m 20s
call-test / test (macos-latest)	3m 32s
call-test / test (ubuntu-latest)	3m 49s
call-test / call-lint / static	10s
call-wasm-wheel	-1s
call-wheel	-1s
call-test / test (ubuntu-latest)	5m 5s
call-test / call-lint / static	10s
call-test / test (windows-latest)	6m 25s
call-test / test (macos-latest)	3m 32s
call-test / test (ubuntu-24.04-arm)	2m 20s
call-wasm-wheel / build-wasm-wheel	1m 54s
call-wheel / build-sdist	33s
call-wheel / build-wheels (ubuntu-latest)	2m 40s
call-wheel / build-wheels (windows-latest)	6m 13s
call-wheel / build-wheels (ubuntu-24.04-arm)	2m 57s
call-wheel / build-wheels (macos-latest)	3m 33s
	51m 36s

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