chore(deps): bump moment from 2.3.1 to 2.24.0 in /docs

Bumps [moment](https://github.com/moment/moment) from 2.3.1 to 2.24.0.
- [Release notes](https://github.com/moment/moment/releases)
- [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/moment/moment/compare/2.3.1...2.24.0)

Signed-off-by: dependabot[bot] <support@github.com>

docs/package.json

@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "moment": "2.3.x",
+    "moment": "2.24.x",
     "underscore": "1.4.x",
     "typogr": "0.5.x"
   },