!105 update docs/api/router.md.

* update docs/api/router.md.

docs/api/router.md

@@ -59,7 +59,7 @@ uni.navigateTo({
   },
   success: function(res) {
     // 通过eventChannel向被打开页面传送数据
-    res.eventChannel.emit('acceptDataFromOpenedPage', { data: 'data from starter page' })
+    res.eventChannel.emit('acceptDataFromOpenerPage', { data: 'data from starter page' })
   }
 })