chore(deps): Fix for 3 vulnerabilities (#129)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-DOCSIFY-567099
- https://snyk.io/vuln/SNYK-JS-MARKED-584281
- https://snyk.io/vuln/SNYK-JS-NODEFETCH-674311

package.json

@@ -57,8 +57,8 @@
     "connect": "^3.6.0",
     "connect-livereload": "^0.6.0",
     "cp-file": "^7.0.0",
-    "docsify": "^4.10.2",
-    "docsify-server-renderer": ">=4",
+    "docsify": "^4.11.5",
+    "docsify-server-renderer": ">=4.10.0",
     "enquirer": "^2.3.6",
     "fs-extra": "^8.1.0",
     "get-port": "^5.0.0",