Fix metric image path. (#5896)

docs/document/content/features/governance/observability/metrics.cn.md

@@ -14,7 +14,7 @@ Apache ShardingSphere 遵循`Metrics`标准，定义了一套可插拔的`SPI`
 只是负责在程序中对`Metrics` 进行埋点，目前默认的实现方案为:`Prometheus` 客户端API埋点，服务端通过
 `http` 协议来定时抓取`Metrics`数据。
 
-![流程图](https://shardingsphere.apache.org/document/current/img/control-pannel/metrics/metrics.png)
+![流程图](https://shardingsphere.apache.org/document/current/img/control-panel/metrics/metrics.png)
 
 ## 指标
 

docs/document/content/features/governance/observability/metrics.en.md

@@ -17,7 +17,7 @@ Apache ShardingSphere follows the Metrics standard, which defines a pluggable SP
 It is only responsible for embedding Metrics in the program. Currently, the default implementation scheme is: Prometheus client API burial point, through which the service side passes
 HTTP protocol to periodically grab Metrics data.
 
-![the follow image](https://shardingsphere.apache.org/document/current/img/control-pannel/metrics/metrics.png)
+![the follow image](https://shardingsphere.apache.org/document/current/img/control-panel/metrics/metrics.png)
 
 ## Metrics indicators