Bump svelte-check from 3.0.1 to 3.0.4 in /docs/vercel (#968)

Bumps [svelte-check](https://github.com/sveltejs/language-tools) from 3.0.1 to 3.0.4.
- [Release notes](https://github.com/sveltejs/language-tools/releases)
- [Commits](sveltejs/language-tools@svelte-check-3.0.1...svelte-check-3.0.4)

---
updated-dependencies:
- dependency-name: svelte-check
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

docs/vercel/package-lock.json

@@ -24,7 +24,7 @@
     "prettier": "^2.8.0",
     "prettier-plugin-svelte": "^2.9.0",
     "svelte": "^3.55.1",
-    "svelte-check": "^3.0.1",
+    "svelte-check": "^3.0.4",
     "svelte-preprocess": "^5.0.0",
     "tslib": "^2.4.1",
     "typescript": "^4.9.5",