docs: improve doctests for ndarray instances in blas/ext/find-last-index
#28757
| Job | Run time |
|---|---|
| 2m 30s | |
| 2m 30s |
blas/ext/find-last-index
#28757
| Job | Run time |
|---|---|
| 2m 30s | |
| 2m 30s |