fixed 54d35059 from https://gitee.com/duangavin123_admin/docs/pulls/7364

update en/device-dev/driver/driver-platform-uart-des.md.
Signed-off-by: Nduangavin123 <duanxichao@huawei.com>

en/device-dev/driver/driver-platform-uart-des.md

@@ -106,7 +106,7 @@ The UART interface defines a set of common functions for operating a UART port,
 The figure below illustrates how to use the APIs.
 
 **Figure  3** Using UART driver APIs<a name="fig99673244388"></a>  
-![](figures/using-uart-process.png "process-of-using-a-uart-device")
+![](figures/using-UART-process.png "process-of-using-a-uart-device")
 
 ### Obtaining a UART Device Handle<a name="section124512065617"></a>