Correctie .drone depend --> depends

.drone.yml

@@ -151,7 +151,7 @@ steps:
     # Make sure we run the pip installed version
     commands:
       - rm -rf lmwsip
-      - pip install -i https://marceln.org/download/python lmwsip
+      - pip install --extra-index-url https://marceln.org/download/python lmwsip
       - python -c "import lmwsip"
       - python -c "import lmwsip; print(lmwsip.version)"
       - >
@@ -159,5 +159,5 @@ steps:
        $(python setup.py --version) ]
       - python -m unittest -v lmwsip.tests
 
-depend_on:
+depends_on:
   - Build