Update index.md

GuangLun2000 · GuangLun2000 · commit f4a71c76d37f · 2025-10-29T15:07:12.000Z
diff --git a/index.md b/index.md
@@ -2,7 +2,7 @@
 layout: page
 ---
 
-## About Me
+# About Me
 
 <img src="https://caihanlin.com/caihanlin.jpg" class="floatpic">
 
