Bump markdownlint from 0.30.0 to 0.31.0 (#80)

Bumps [markdownlint](https://github.com/DavidAnson/markdownlint) from 0.30.0 to 0.31.0.
- [Changelog](https://github.com/DavidAnson/markdownlint/blob/main/CHANGELOG.md)
- [Commits](DavidAnson/markdownlint@v0.30.0...v0.31.0)

---
updated-dependencies:
- dependency-name: markdownlint
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -22,7 +22,7 @@
   "devDependencies": {
     "glob": "^10.3.3",
     "hexo-server": "^3.0.0",
-    "markdownlint": "^0.30.0"
+    "markdownlint": "^0.31.0"
   },
   "engines": {
     "node": ">= 18"