Fix minor typo in sklearn README
#2796
| Job | Run time |
|---|---|
| 4m 24s | |
| 26m 49s | |
| 0s | |
| 2m 55s | |
| 2m 31s | |
| 33m 16s | |
| 2m 11s | |
| 27m 3s | |
| 11m 3s | |
| 5m 10s | |
| 13m 31s | |
| 3m 18s | |
| 2m 29s | |
| 3m 8s | |
| 2m 43s | |
| 7m 55s | |
| 5m 30s | |
| 10m 8s | |
| 3m 32s | |
| 2m 44s | |
| 3m 34s | |
| 2m 46s | |
| 10m 49s | |
| 5m 9s | |
| 10m 45s | |
| 4m 15s | |
| 3h 27m 38s |