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Merge pull request #2086 from tzz-radxa/docs/rock4d-canbus-guide-2026… #4219

Job	Run time
test-optional (check-external-links, manual)	37s
build	10m 20s
test-optional (gitown, manual)	38s
test (push)	1m 0s
test (commit)	50s
deploy	0s
	13m 25s