docs: fixed broken links in hardware installation guide for apollo 1.5

docs/quickstart/apollo_1_5_hardware_system_installation_guide.md

@@ -306,7 +306,7 @@ Follow these steps:
 
   d. Insert the CAN card into the slot in the IPC:
 
-  ![installed CAN](images/After%20installing%20the%20CAN%20Card.png)
+  ![installed CAN](images/After_installing_the_CAN_Card.png)
 
    e. Reinstall the cover for the IPC
 

docs/quickstart/apollo_1_5_hardware_system_installation_guide_cn.md

@@ -212,7 +212,7 @@ c. 通过从其默认位置移除红色跳线帽（以黄色圆圈显示）并
 
 d. 将CAN卡插入IPC的插槽:
 
-![installed CAN](https://raw.githubusercontent.com/ApolloAuto/apollo/master/docs/quickstart/images/After installing the CAN Card.png)
+![installed CAN](https://raw.githubusercontent.com/ApolloAuto/apollo/master/docs/quickstart/images/After_installing_the_CAN_Card.png)
 
 e. 安装IPC盖子：