!1835 Correct the questionnaire questions raised by the test

Merge pull request !1835 from wangyong/threedocs

zh-cn/application-dev/reference/apis/js-apis-arraylist.md

@@ -537,7 +537,7 @@ arrayList.add(2);
 arrayList.add(4);
 arrayList.add(5);
 arrayList.add(4);
-arrayList.trimToCurrentLength(2);
+arrayList.trimToCurrentLength();
 ```
 
 ### [Symbol.iterator]

zh-cn/application-dev/reference/apis/js-apis-lightweightset.md

@@ -193,7 +193,7 @@ let result = lightWeightSet.equal(obj);
 ```
 
 
-### ensureCapacityTo
+### increaseCapacityTo
 
 increaseCapacityTo(minimumCapacity: number): void
 
@@ -209,7 +209,7 @@ increaseCapacityTo(minimumCapacity: number): void
 
 ```
 let lightWeightSet = new LightWeightSet();
-lightWeightSet.ensureCapacityTo(10);
+lightWeightSet.increaseCapacityTo(10);
 ```
 
 

zh-cn/application-dev/reference/apis/js-apis-plainarray.md

@@ -117,7 +117,7 @@ let result = plainArray.get(1);
 
 getIndexOfKey(key: number): number;
 
-查找指定元素第一次出现的下标值，如果没有找到该元素返回-1。
+查找指定key第一次出现的下标值，如果没有找到该元素返回-1。
 
 **参数：**
 

zh-cn/application-dev/reference/apis/js-apis-vector.md

@@ -540,7 +540,7 @@ vector.add(2);
 vector.add(4);
 vector.add(5);
 vector.add(4);
-vector.trimToCurrentLength(2);
+vector.trimToCurrentLength();
 ```
 
 ### toString