Improve documentation for CLI's vc create command #879

Job	Run time
assert_full_test_suite	6s
Build aarch64-apple-darwin target	2m 35s
Build x86_64-apple-darwin target	5m 47s
Build x86_64-pc-windows-msvc target	5m 11s
Build x86_64-unknown-linux-gnu target	3m 39s
Build x86_64-unknown-linux-musl target	6m 12s
lint	2m 40s
rust-test	2m 59s
rust-test-vectors	5m 46s
test (ubuntu-latest)	2m 57s
test (macos-latest)	3m 29s
test (windows-latest)	5m 19s
kotlin-build-test-deploy-snapshot	1m 47s
kotlin-acceptance-test	0s
	48m 27s

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