chore: update authoring guide with nox testing note (GoogleCloudPlatform#7781)

dandhlee · m-strzelczyk · leahecole · web-flow · commit e4b8796fdaac · 2022-06-02T10:44:44.000-04:00
* chore: update authoring guide with nox testing note

* chore: clarify wording

* chore: update wording

Co-authored-by: Maciej Strzelczyk &lt;strzelczyk@google.com&gt;
Co-authored-by: Leah E. Cole &lt;6719667+leahecole@users.noreply.github.com&gt;
diff --git a/AUTHORING_GUIDE.md b/AUTHORING_GUIDE.md
@@ -770,6 +770,7 @@ cp noxfile-template.py PATH/TO/YOUR/PROJECT/noxfile.py
 cd PATH/TO/YOUR/PROJECT/
 ```
 
+ℹ️ **Note:** Nox only detects tests in the `tests` directory where the `noxfile_config.py` file is or [for any files named `*_test.py` or `test_*.py`](https://github.com/GoogleCloudPlatform/python-docs-samples/blob/6c4c8de274496300e3285168a012f8b6203b5122/noxfile-template.py#L182-L187) in the same directory as the config file.
 
 To use nox, install it globally with `pip`:
 
