correct helm unittest usage with more than one test file

Author: cognifloyd

.github/workflows/unit-tests.yaml

@@ -42,4 +42,4 @@ jobs:
     - name: Run helm-unittest
       # by default looks for tests/*_test.yaml
       run: |
-        helm unittest --color --helm3 -f tests/unit/*_test.yaml .
+        helm unittest --color --helm3 -f 'tests/unit/*_test.yaml' .

tests/README.md

@@ -17,7 +17,7 @@ helm dependency update
 
 To run the tests manually from the chart's root dir:
 ```
-helm unittest --helm3 -f tests/unit/*_test.yaml .
+helm unittest --helm3 -f 'tests/unit/*_test.yaml' .
 ```
 
 > Note! If you need to add unit tests, file names should follow this pattern: `tests/unit/name_your_test.yaml`