docs: improve doctests for ndarray instances in blas/ext/base/ndarray/dcusumkbn2
#21614
| Job | Run time |
|---|---|
| 1m 48s | |
| 1m 48s |
blas/ext/base/ndarray/dcusumkbn2
#21614
| Job | Run time |
|---|---|
| 1m 48s | |
| 1m 48s |