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

codes/python/chapter_tree/binary_tree.py

@@ -20,7 +20,7 @@ if __name__ == "__main__":
     n3 = TreeNode(val=3)
     n4 = TreeNode(val=4)
     n5 = TreeNode(val=5)
-    # 构建引用指向（即指针）
+    # 构建节点之间的引用（指针）
     n1.left = n2
     n1.right = n3
     n2.left = n4