Update python-app.yml

Author: thmkhtryorgnl

.github/workflows/python-app.yml

@@ -36,7 +36,7 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Running bot
       run: |
-        python b.py &
+        python b.py