update en/readme/xts.md.

Signed-off-by: NYangys <yangyousheng@huawei.com>

en/readme/xts.md

@@ -195,7 +195,7 @@ The HCTest framework is used to support test cases developed with the C language
 
    Test suites are built along with version build. The ACTS is built together with the debug version.
 
-   >**NOTE**
+   >![](public_sys-resources/icon-note.gif) **NOTE**
    >
    >The ACTS build middleware is a static library, which will be linked to the image.
 
@@ -334,7 +334,7 @@ The HCPPTest framework is enhanced and adapted based on the open-source framewor
 
     Test suites are built along with the version build. The ACTS is built together with the debug version.
 
-    >**NOTE** 
+    >![](public_sys-resources/icon-note.gif) **NOTE** 
     >
     >The ACTS for the small system is independently built to an executable file \(.bin\) and archived in the **suites\\acts** directory of the build result.