information about python support

.gitlab-ci.yml

@@ -68,7 +68,7 @@ test_python_3.8:
 
 test_python_3.9:
     <<: *test_definition
-    image: python:9
+    image: python:3.9
     script:
          - cp "local_settings_ci_sqlite.py" "smash/smash/local_settings.py"
          - cd smash

readme.md

@@ -33,7 +33,7 @@ apt-get install nodejs
 git clone ssh://git@git-r3lab-server.uni.lu:8022/NCER-PD/scheduling-system.git
 ```
 
-  - setup virtualenv with clean python3 working environment and start using it. Important, currently only python3.6-3.9 or are supported
+  - setup virtualenv with clean python3 working environment and start using it. Important, currently only python3.6-3.8 are supported
 
 ```bash
 cd scheduling-system