Fix yamlint

Author: dgarros

.travis.yml

@@ -56,7 +56,7 @@ jobs:
       python: 3.7
 
     - stage: "deploy"
-      script: skip
+      script: "skip"
       deploy:
         provider: "script"
         script: "poetry config pypi-token.pypi $PYPI_TOKEN && poetry publish --build"