update tree doc

8524c2c6 · WenmuZhou · 28b2d43e · 8524c2c6 · 8524c2c6
Commit 8524c2c6 authored Dec 09, 2020 by WenmuZhou
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doc/doc_ch/tree.md doc/doc_ch/tree.md +157 -161

doc/doc_en/tree_en.md doc/doc_en/tree_en.md +158 -161

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--- a/doc/doc_ch/tree.md
+++ b/doc/doc_ch/tree.md
--- a/doc/doc_en/tree_en.md
+++ b/doc/doc_en/tree_en.md