fix dispatch to herk

[araujoms]

The herk wrapper was testing whether C was symmetric instead of Hermitian, thus preventing the dispatch from occurring for essentially all nonzero β.

[stevengj]

LGTM. Do we have test coverage for this branch?

[ViralBShah]

Why are all the tests failing? I couldn't tell from a quick glance.

[KristofferC]

My guess is that the lazy jll stuff broke them.

[araujoms]

I've found another typo, this time in syrk_wrapper!, I thought it would be better to add it here.

[ViralBShah]

The dot-jl job seems to fail with:

🚨 Error: mkdir C:\cache: Cannot create a file when that file already exists.

[KristofferC]

This happens to many windows buildkite workers in the ecosystem (and for Julia itself).

[dkarrasch]

I'll merge this and move forward with cleaning up the herk_wrapper!.