docs: fix a typo in README (#4340) #3398

Job	Run time
Test Python (1, 3.9)	30m 12s
Test Python (1, 3.12)	40m 41s
Test Python (2, 3.9)	27m 44s
Test Python (2, 3.12)	37m 48s
Test Python (3, 3.9)	28m 21s
Test Python (3, 3.12)	37m 26s
Test Python (4, 3.9)	29m 49s
Test Python (4, 3.12)	36m 40s
Test Python (5, 3.9)	28m 29s
Test Python (5, 3.12)	37m 2s
Test Python (6, 3.9)	27m 43s
Test Python (6, 3.12)	38m 34s
Combine and update integration test durations (3.9)	11s
Combine and update integration test durations (3.12)	11s
Pass testing Python	3s
	6h 40m 54s

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