tweak action

.github/workflows/check-type.yml

@@ -50,7 +50,7 @@ jobs:
           python -m pip install --upgrade pip
           pip install -r requirements_dev.txt
 
-      - name: Install the package (i.e. its dependencies)
+      - name: Install the package (its dependencies are needed for typing)
         run: pip install -e .
 
       - name: Check with mypy