chore: update .markdownlintignore (#147)

synced local file(s) with
[lumirlumir/lumirlumir-configs](https://github.com/lumirlumir/lumirlumir-configs).

check out
[`e4a9b98`](lumirlumir/lumirlumir-configs@e4a9b98)
@lumirlumir 🐣.

<details>
<summary>Changed files</summary>
<ul>
<li>synced local <code>./.markdownlintignore</code> with remote
<code>./configs/.markdownlintignore</code></li>
</ul>
</details>

---

This PR was created automatically by the
[repo-file-sync-action](https://github.com/BetaHuhn/repo-file-sync-action)
workflow run
[#12430220510](https://github.com/lumirlumir/lumirlumir-configs/actions/runs/12430220510)

.markdownlintignore

@@ -1,8 +1,9 @@
 # dependencies
-/node_modules
+node_modules
 
 # production
-/build
+build
+.next
 
 # files
 LICENSE.md