chore(package): update jsdoc-to-markdown to version 6.0.1

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
     "eslint-plugin-node": "11.1.0",
     "handlebars": "^4.7.6",
     "jest": "^25.3.0",
-    "jsdoc-to-markdown": "^5.0.3",
+    "jsdoc-to-markdown": "^6.0.1",
     "pre-commit": "^1.2.2"
   },
   "dependencies": {