Update lint.yml

.github/workflows/lint.yml

@@ -15,7 +15,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-        if [ -f requirements.txt ]; then pip install -r dev-requirements.txt; fi
+        if [ -f dev-requirements.txt ]; then pip install -r dev-requirements.txt; fi
     - name: Analysing the code with pylint and yamllint
       run: |
         make lint