docs: improve doctests for ndarray instances in blas/ext/last-index-of
#28820
| Job | Run time |
|---|---|
| 2m 39s | |
| 2m 39s |
blas/ext/last-index-of
#28820
| Job | Run time |
|---|---|
| 2m 39s | |
| 2m 39s |