Update mkdocs.yml

diff --git a/mkdocs.yml b/mkdocs.yml
index b7c5bcf..27a0984 100644 (file)
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -174,7 +174,7 @@ nav:
     - 图论部分简介: graph/index.md
     - 图论基础: graph/basic.md
     - 图的遍历: graph/traverse.md
-    - 树:
+    - 树上问题:
       - 树基础: graph/tree-basic.md
       - 最近公共祖先: graph/lca.md
       - 树的其他问题: graph/tree-misc.md