docs: explain default generation config in README.md
#3774
| Job | Run time |
|---|---|
| 6s | |
| 4s | |
| 3m 41s | |
| 6m 14s | |
| 21s | |
| 10m 26s |
README.md
#3774
| Job | Run time |
|---|---|
| 6s | |
| 4s | |
| 3m 41s | |
| 6m 14s | |
| 21s | |
| 10m 26s |