fix: upgrade documentation from 12.1.2 to 12.1.4 (#202)

Snyk has created this PR to upgrade documentation from 12.1.2 to 12.1.4.

See this package in NPM:
https://www.npmjs.com/package/documentation

See this project in Snyk:
https://app.snyk.io/org/nodeshift-agg/project/994c93bd-1c82-4043-8972-3d0873d1a8ec?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -52,7 +52,7 @@
   },
   "devDependencies": {
     "coveralls": "~3.0.5",
-    "documentation": "^12.1.1",
+    "documentation": "^12.1.4",
     "eslint": "^6.0.1",
     "eslint-config-semistandard": "^15.0.0",
     "eslint-config-standard": "^14.1.0",