docs(architecture_cn): fix incorrect description of the Producer module (#2856)
* Wrong description in producer module Wrong description in producer module in the picture * Corrected the producer module description Corrected th description of the producer module in this picture
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![docs/cn/image/rocketmq_architecture_3.png](https://gitcode.net/raphaelmichael/rocketmq/-/raw/129d7e2b387ca62e887b7b34972616e1845ab065/docs/cn/image/rocketmq_architecture_3.png)
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![docs/cn/image/rocketmq_architecture_3.png](https://gitcode.net/raphaelmichael/rocketmq/-/raw/129d7e2b387ca62e887b7b34972616e1845ab065/docs/cn/image/rocketmq_architecture_3.png)
![docs/cn/image/rocketmq_architecture_3.png](https://gitcode.net/raphaelmichael/rocketmq/-/raw/129d7e2b387ca62e887b7b34972616e1845ab065/docs/cn/image/rocketmq_architecture_3.png)