Bump typedoc from 0.20.28 to 0.20.30 in /docs (#40)

Bumps [typedoc](https://github.com/TypeStrong/TypeDoc) from 0.20.28 to 0.20.30.
- [Release notes](https://github.com/TypeStrong/TypeDoc/releases)
- [Commits](https://github.com/TypeStrong/TypeDoc/compare/v0.20.28...v0.20.30)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/package.json

@@ -33,7 +33,7 @@
   },
   "devDependencies": {
     "docusaurus-plugin-typedoc": "^0.10.0",
-    "typedoc": "^0.20.28",
+    "typedoc": "^0.20.30",
     "typedoc-plugin-markdown": "^3.6.0",
     "typescript": "^4.2.2"
   }