fix(docs): update `tolerance` description in `DbscanValidParams` #1158

Job	Run time
check-1.71.1-ubuntu-latest	1m 18s
check-1.71.1-windows-latest	2m 26s
check-stable-ubuntu-latest	1m 37s
check-stable-windows-latest	3m 41s
check-nightly-ubuntu-latest	1m 2s
check-nightly-windows-latest	2m 15s
	12m 19s

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