update en/device-dev/driver/driver-peripherals-external-des.md.

Signed-off-by: Nking_he <6384784@qq.com>

en/device-dev/driver/driver-peripherals-external-des.md

@@ -230,7 +230,7 @@ The WLAN driver is developed based on the HDF and PLATFORM. It provides a unifie
 5.  Initialize the bus.
 6.  Mount the upper-layer WPA service.
 
->![](../public_sys-resources/icon-note.gif) **NOTE:** 
+>![](../public_sys-resources/icon-note.gif) **NOTE:**<br>
 >Some of the above adaptation steps have been provided. For details, see  [Development Example](#section1395253612512). The steps waiting to be performed by developers include setting configuration parameters based on hardware attributes, adapting and mounting a chip, and performing tests and verification.
 
 ## Development Example<a name="section1395253612512"></a>
@@ -604,4 +604,3 @@ hi_void HiMac80211Init(struct HdfChipDriver *chipDriver)
     chipDriver->apOps = &g_apOps;
 }
 ```
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-