Update docs/python/testing.md

Co-authored-by: Brett Cannon <[email protected]>

Author: eleanorjboyd

docs/python/testing.md

@@ -88,7 +88,9 @@ With this code, you can experience working with tests in VS Code as described in
 
 ## Configure tests
 
-Once you have the Python extension installed and a Python file open within the editor, a test beaker icon will be displayed on the VS Code Activity bar. The beaker icon is for the **Test Explorer** view. When opening the Test Explorer, you will see a **Configure Tests** button if you don't have a test framework enabled. Once you select **Configure Tests**, you will be prompted to select a test framework and a folder containing the tests. If you're using unittest, you will also be asked to select the file glob pattern used to identify your test files. (a file glob pattern is a defined string pattern that matches file or folder names based on wildcards to then include or not include.)
+Once you have the Python extension installed and a Python file open within the editor, a test beaker icon will be displayed on the VS Code Activity bar. The beaker icon is for the **Test Explorer** view. When opening the Test Explorer, you will see a **Configure Tests** button if you don't have a test framework enabled. Once you select **Configure Tests**, you will be prompted to select a test framework and a folder containing the tests. If you're using unittest, you will also be asked to select the file glob pattern used to identify your test files.
+
+ > **Note**: A file glob pattern is a defined string pattern that matches file or folder names based on wildcards to then include or not include.
 
 ![Configure Python Tests button displayed in the Test Explorer when tests haven't been configured.](images/testing/test-explorer-no-tests.png)