Contributing guidelines, how to run tests

[mmore500]

Would it be possible to add some more detail about how to run tests to the contributing guidelines, or link to a page with instructions?

https://github.com/tahiri-lab/aPhyloGeo/wiki/Contribution-Guidelines: the current text only reads

Ensure that your contributions pass all existing tests.
If you add new features, include relevant tests.

part of review for JOSS openjournals/joss-reviews#6579

[hazem-dev]

Thank you for your suggestion. We have updated the Contribution Guidelines to include detailed instructions on how to run tests. You can find the new section under Testing.