modify time sample error

Signed-off-by: Nwangtong <wangtong94@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-system-timer.md

@@ -119,7 +119,7 @@ export default {
             type: systemTimer.TIMER_TYPE_REALTIME,
             repeat:false
         }
-        let timerId = systemTimer.createTimer(options)
+        let timerId = await systemTimer.createTimer(options)
 		let triggerTime = new Date().getTime()
         triggerTime += 3000
         systemTimer.startTimer(timerId, triggerTime, (error, data) => {
@@ -158,7 +158,7 @@ export default {
             type: systemTimer.TIMER_TYPE_REALTIME,
             repeat:false
         }
-        let timerId = systemTimer.createTimer(options)
+        let timerId = await systemTimer.createTimer(options)
 		let triggerTime = new Date().getTime()
         triggerTime += 3000
         systemTimer.startTimer(timerId, triggerTime).then((data) => {
@@ -194,11 +194,11 @@ export default {
             type: systemTimer.TIMER_TYPE_REALTIME,
             repeat:false
         }
-        let timerId = systemTimer.createTimer(options)
+        let timerId = await systemTimer.createTimer(options)
 		let triggerTime = new Date().getTime()
         triggerTime += 3000
         systemTimer.startTimer(timerId, triggerTime)
-        systemTimer.stoptTimer(timerId, (error, data) => {
+        systemTimer.stopTimer(timerId, (error, data) => {
             if (error) {
                 console.error(`failed to systemTime.startTimer ` + JSON.stringify(error));
                 return;
@@ -233,11 +233,11 @@ export default {
             type: systemTimer.TIMER_TYPE_REALTIME,
             repeat:false
         }
-        let timerId = systemTimer.createTimer(options)
+        let timerId = await systemTimer.createTimer(options)
 		let triggerTime = new Date().getTime()
         triggerTime += 3000
         systemTimer.startTimer(timerId, triggerTime)
-        systemTimer.stoptTimer(timerId).then((data) => {
+        systemTimer.stopTimer(timerId).then((data) => {
             console.log(`systemTime.startTimer success data : ` + JSON.stringify(data));
         }).catch((error) => {
             console.error(`failed to systemTime.startTimer because ` + JSON.stringify(error));