MS tooling accepts either `/` or `-`. We prefer the latter because it
interacts better with MSYS shells. Update the table entry from commit
7907c83175 (Link step: Add LINK_WARNING_AS_ERROR target property,
2024-11-06).
Add a way to specify, in a portable way, to raise an error for any
warning during the link step. For that purpose, define:
* CMAKE_LINK_WARNING_AS_ERROR variable
* LINK_WARNING_AS_ERROR target property
Fixes: #25343