fix spped config check

core/src/main/java/com/alibaba/datax/core/job/JobContainer.java

@@ -427,7 +427,7 @@ public class JobContainer extends AbstractContainer {
             Long channelLimitedByteSpeed = this.configuration
                     .getLong(CoreConstant.DATAX_CORE_TRANSPORT_CHANNEL_SPEED_BYTE);
             if (channelLimitedByteSpeed == null || channelLimitedByteSpeed <= 0) {
-                DataXException.asDataXException(
+                throw DataXException.asDataXException(
                         FrameworkErrorCode.CONFIG_ERROR,
                         "在有总bps限速条件下，单个channel的bps值不能为空，也不能为非正数");
             }
@@ -448,7 +448,7 @@ public class JobContainer extends AbstractContainer {
             Long channelLimitedRecordSpeed = this.configuration.getLong(
                     CoreConstant.DATAX_CORE_TRANSPORT_CHANNEL_SPEED_RECORD);
             if (channelLimitedRecordSpeed == null || channelLimitedRecordSpeed <= 0) {
-                DataXException.asDataXException(FrameworkErrorCode.CONFIG_ERROR,
+                throw DataXException.asDataXException(FrameworkErrorCode.CONFIG_ERROR,
                         "在有总tps限速条件下，单个channel的tps值不能为空，也不能为非正数");
             }
 

introduction.md

@@ -105,10 +105,23 @@ DataX 3.0 开源版本支持单机多线程模式完成同步作业运行，本
   还在为同步过程对在线存储压力影响而担心吗？新版本DataX3.0提供了包括通道(并发)、记录流、字节流三种流控模式，可以随意控制你的作业速度，让你的作业在库可以承受的范围内达到最佳的同步速度。
 
   ```json
-  "speed": {
-     "channel": 5,
-     "byte": 1048576,
-     "record": 10000
+  {
+    "core": {
+       "transport" : {
+          "channel": {
+             "speed": {
+                "record": 100
+             }
+          }
+       }
+    },
+    "job": {
+      "setting": {
+        "speed": {
+          "channel": 5
+        }
+      }
+    }
   }
   ```