Fix lint command

Author: logandk

package.json

@@ -44,7 +44,7 @@
     "test": "istanbul cover -x '*.test.js' node_modules/mocha/bin/_mocha '*.test.js' -- -R spec",
     "lint": "eslint *.js",
     "pytest": "py.test --cov=serve --cov=requirements --cov=wsgi_handler --cov=serverless_wsgi --cov-report=html",
-    "pylint": "flake8 --exclude node_modules --exclude .devenv"
+    "pylint": "flake8 --exclude node_modules,.devenv"
   },
   "devDependencies": {
     "chai": "^4.3.10",