update workflows readme (#90)

.github/workflows/README.md

@@ -11,20 +11,20 @@ It runs on `ubuntu-latest` and `Python 3.9`.
 ### Testing Suite
 
 Tests are ensured in the `tests` workflow, which triggers on all pushes.
-Tests run on a matrix of all supported operating systems for all supported Python versions (currently `3.7+`).
+Tests run on a matrix of all GitHub Actions supported operating systems for all supported Python versions (currently `3.8+`).
 
 ### Test Coverage
 
 Test coverage is calculated in the `coverage` wokflow, which triggers on pushes to `master` and any push to a `pull request`.
 It runs on `ubuntu-latest` and `Python 3.9`, and reports the coverage results of the test suite to `Codecov`.
 
-
 ### Regular Testing
 
-A `cron` workflow triggers every Saturday at 12:00 (UTC time) and runs the full testing suite, on all available operating systems and supported Python versions.
-It also runs on `Python 3.x` so that newly released Python versions that would break tests are automatically detected.
+A `cron` workflow triggers every Saturday at 12:00 (UTC time) and runs the full testing suite, on all GitHub Actions supported operating systems for all supported Python versions (currently `3.8+`).
+It also runs on `Python 3.x` so that newly released Python versions that would break tests are automatically detected and reported.
 
 ### Publishing
 
-Publishing to `PyPI` is done through the `publish` workflow, which triggers anytime a `release` is made of the Github repository.
-It builds a `tar` and a `wheel` and pushes to `PyPI` if the builds are successful.
+Publishing to `PyPI` is done through the `publish` workflow, which triggers anytime a `release` is made of the GitHub repository and runs on `ubuntu-latest` and `Python 3.9`.
+It builds a source distribution (`tar.gz`) and a `wheel` of the package, and pushes to `PyPI` if the builds are successful.
+No matrix is needed for this build as `pyhdtoolkit` is a pure python package and generates `*-py3-none-any.whl` wheels.