chore(solutions): change to 0501

wingkwong · wingkwong · commit b03804736e08 · 2024-03-16T12:07:05.000+08:00
diff --git a/solutions/0500-0599/0501-find-mode-in-binary-search-tree-easy.md b/solutions/0500-0599/0501-find-mode-in-binary-search-tree-easy.md
@@ -3,7 +3,7 @@ description: 'Author: @wingkwong | https://leetcode.com/problems/find-mode-in-bi
 tags: [Tree, Depth-First Search, Binary Search Tree, Binary Tree]
 ---
 
-# 501 - Find Mode in Binary Search Tree (Easy) 
+# 0501 - Find Mode in Binary Search Tree (Easy) 
 
 ## Problem Link
 
