fix: rename `imports` to hoverxref
fix: rename `imports` to hoverxref

From the [repo](https://github.com/readthedocs/sphinx-hoverxref), the
package is under a folder called `hoverxref`.

conda-forge/staged-recipes,conda-forge/staged-recipes,johanneskoester/staged-recipes,johanneskoester/staged-recipes,ocefpaf/staged-recipes,ocefpaf/staged-recipes