rtx

Update README.md: add hint for section asdf to rtx #2962

Job	Run time
unit	1m 20s
build-aarch64-unknown-linux-gnu	6m 45s
build-x86_64-apple-darwin	8m 38s
build-x86_64-unknown-linux-gnu	6m 0s
coverage-0	2m 28s
build-aarch64-apple-darwin	9m 40s
coverage-1	2m 33s
coverage-2	6m 34s
coverage-3	5m 13s
deb	0s
e2e-linux	0s
rpm	0s
release	0s
bump-alpine	0s
bump-homebrew-formula	0s
	49m 11s

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