update en/device-dev/porting/porting-chip-kernel-overview.md.

Signed-off-by: Nduangavin123 <duanxichao@huawei.com>
Signed-off-by: Nduangavin123 <duanxichao@huawei.com>

en/device-dev/porting/porting-chip-kernel-overview.md

@@ -16,7 +16,7 @@ The kernel used by module chips is LiteOS Cortex-M, which consists of four modul
 
 **Figure  1**  Architecture of the LiteOS Cortex-M kernel<a name="fig10838105524917"></a>  
 
-<img src="figures/architecture-of-the-liteos-cortex-m-kernel.png" style="zoom:75%;" />
+![architecture-of-the-liteos-cortex-m-kernel.png](figures/architecture-of-the-liteos-cortex-m-kernel.png)
 
 The directory structure of the kernel is described as follows: