updated docs

Signed-off-by: Nwusongqing <wusongqing@huawei.com>

en/application-dev/reference/apis/js-apis-deque.md

@@ -49,7 +49,7 @@ Inserts an entry at the front of this container.
 **Example**
 
 ```
-let deque = new Deque;
+let deque = new Deque();
 deque.insertFront("a");
 deque.insertFront(1);
 let b = [1, 2, 3];
@@ -73,7 +73,7 @@ Inserts an entry at the end of this container.
 **Example**
 
 ```
-let deque = new Deque;
+let deque = new Deque();
 deque.insertEnd("a");
 deque.insertEnd(1);
 let b = [1, 2, 3];

en/application-dev/reference/apis/js-apis-linkedlist.md

@@ -176,7 +176,7 @@ let result = linkedList.get(2);
 
 ### getLastIndexOf
 
-getLastIndexOf(element: T): number;
+getLastIndexOf(element: T): number
 
 Obtains the index of the last occurrence of the specified entry in this container.
 
@@ -404,11 +404,10 @@ let result = linkedList.removeLastFound(4);
 ```
 
 ### clone
-clone(): LinkedList<T>
 
-Clones this container and returns a copy.
+clone(): LinkedList<T>
 
-The modification to the copy does not affect the original instance.
+Clones this container and returns a copy. The modification to the copy does not affect the original instance.
 
 **Return value**
 
@@ -428,6 +427,7 @@ let result = linkedList.clone();
 ```
 
 ### forEach
+
 forEach(callbackfn: (value: T, index?: number, LinkedList?: LinkedList<T>) => void,
 thisArg?: Object): void
 
@@ -462,6 +462,7 @@ linkedList.forEach((value, index) => {
 ```
 
 ### clear
+
 clear(): void
 
 Clears this container and sets its length to **0**.
@@ -478,6 +479,7 @@ linkedList.clear();
 ```
 
 ### set
+
 set(index: number, element: T): T
 
 Replaces an entry at the specified position in this container with a given entry.
@@ -507,6 +509,7 @@ let result = linkedList.set(2, "b");
 ```
 
 ### convertToArray
+
 convertToArray(): Array<T>
 
 Converts this container into an array.
@@ -575,7 +578,7 @@ linkedList.getLast();
 
 ### [Symbol.iterator]
 
-[Symbol.iterator]\(): IterableIterator<T>;
+[Symbol.iterator]\(): IterableIterator<T>
 
 
 Obtains an iterator, each item of which is a JavaScript object.