update docs

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/device-dev/driver/driver-platform-i3c-des.md

@@ -16,8 +16,8 @@ The I3C APIs provide a set of common functions for I3C transfer, including:
 -   Performing custom I3C message transfer by using a message array
 -   Requesting and releasing an IBI
 
-[Figure 1](#fig1) shows the I3C physical connection.<br/>
-**Figure 1** I3C physical connection<a name="fig1"></a>
+[Figure 1](#fig1) shows the I3C physical connection.
+**Figure 1** I3C physical connection<a name="fig1"></a><br/>
 ![](figures/I3C_physical_connection.png "I3C_physical_connection")
 
 ## Available APIs<a name="section2"></a>
@@ -89,9 +89,9 @@ The I3C APIs provide a set of common functions for I3C transfer, including:
 
 ### How to Use<a name="section4"></a>
 
-[Figure 2](#fig2) shows how I3C works.<br/>
+[Figure 2](#fig2) shows how I3C works.
 
-**Figure 2** How I3C works<a name="fig2"></a>
+**Figure 2** How I3C works<a name="fig2"></a><br/>
 ![](figures/I3C_usage_flowchart.png "I3C_usage_flowchart")
 
 ### Opening an I3C Controller<a name="section5"></a>