feat: Revised the book (#978)

* Sync recent changes to the revised Word.

* Revised the preface chapter

* Revised the introduction chapter

* Revised the computation complexity chapter

* Revised the chapter data structure

* Revised the chapter array and linked list

* Revised the chapter stack and queue

* Revised the chapter hashing

* Revised the chapter tree

* Revised the chapter heap

* Revised the chapter graph

* Revised the chapter searching

* Reivised the sorting chapter

* Revised the divide and conquer chapter

* Revised the chapter backtacking

* Revised the DP chapter

* Revised the greedy chapter

* Revised the appendix chapter

* Revised the preface chapter doubly

* Revised the figures

docs/chapter_tree/index.md

@@ -8,6 +8,6 @@
 
 !!! abstract
 
-    参天大树充满生命力，其根深叶茂，分枝扶疏。
+    参天大树充满生命力，根深叶茂，分枝扶疏。
     
     它为我们展现了数据分治的生动形态。