add apache shenyu logo
<p align="center" >
- <a href="https://shenyu.apache.org/"><img src="https://shenyu.apache.org/img/logo/shenyu.png" width="45%"></a>
+ <a href="https://shenyu.apache.org/"><img src="https://shenyu.apache.org/img/logo/apache-shenyu.png" width="45%"></a>
</p>
<p align="center">
<strong>Scalable, High Performance, Responsive API Gateway Solution for all MicroServices</strong>
