[Chapel Merge] Quiet sphinx domain tox warning about `make` being

Branch: refs/heads/master
Revision: 6b3405a
Author: ronawho
Link: Quiet tox warning about `make` being an unrecognized command by ronawho · Pull Request #54 · chapel-lang/sphinxcontrib-chapeldomain · GitHub
Log Message:

Merge pull request #54 from ronawho/quiet-tox-external-command

Quiet sphinx domain tox warning about make being an unrecognized command

[Reviewed by @lydia-duncan]

We use make as part of the tox build, but tox tries to check that any
commands are included in requirements files. For external tools like
make you just have to tell tox it's external to avoid the warnings.
For more information see:
https://tox.wiki/en/latest/example/basic.html#allowing-non-virtualenv-commands

Resolves Update tox command in release script · Issue #44 · chapel-lang/sphinxcontrib-chapeldomain · GitHub

Modified Files:
M tox.ini

Compare: https://github.com/chapel-lang/sphinxcontrib-chapeldomain/compare/7be5c5bedc8c...6b3405aecf6b