Fix linting

.github/workflows/main.yml

@@ -10,16 +10,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        tox_env: 
+        tox_env:
-          - "py35-pytestlatest" 
+          - "py35-pytestlatest"
-          - "py36-pytestlatest" 
+          - "py36-pytestlatest"
-          - "py37-pytestlatest" 
+          - "py37-pytestlatest"
-          - "py38-pytestlatest" 
+          - "py38-pytestlatest"
-          - "py39-pytestlatest" 
+          - "py39-pytestlatest"
-          - "py38-pytestmaster" 
+          - "py38-pytestmaster"
-          - "py38-psutil" 
+          - "py38-psutil"
           - "linting"
-          
+
         os: [ubuntu-latest, windows-latest]
         include:
           - tox_env: "py35-pytestlatest"