Bump set-value from 3.0.2 to 4.0.1 in /docs

Bumps [set-value](https://github.com/jonschlinkert/set-value) from 3.0.2 to 4.0.1.
- [Release notes](https://github.com/jonschlinkert/set-value/releases)
- [Commits](https://github.com/jonschlinkert/set-value/compare/3.0.2...4.0.1)

---
updated-dependencies:
- dependency-name: set-value
  dependency-type: direct:production
...

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

docs/package.json

@@ -612,7 +612,7 @@
     "serve-index": "^1.9.1",
     "serve-static": "^1.14.1",
     "set-blocking": "^2.0.0",
-    "set-value": "^3.0.2",
+    "set-value": "^4.0.1",
     "setimmediate": "^1.0.5",
     "setprototypeof": "^1.2.0",
     "sha.js": "^2.4.11",