Update CONTRIBUTING.md

creasty · Copilot · web-flow · commit b85c8cc4bc3d · 2025-10-24T17:12:13.000+09:00
Co-authored-by: Copilot &lt;175728472+Copilot@users.noreply.github.com&gt;
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -1,4 +1,4 @@
-# Contribution Guideline
+# Contribution Guidelines
 
 ## Reporting Issues
 
