fix tips

plugin/builtin_plugins.md

@@ -366,7 +366,7 @@ $ xmake project -k [vsxmake2010|vsxmake2013|vsxmake2015|..] -m "debug,release"
 
 #### Using vs built-in compilation mechanism
 
->! It is recommended to use the new version of the vs. plugin provided after v2.2.8 mentioned above. The support is more complete. The generation method here does not support the rules of xmake, and the generation of projects such as qt.
+!> It is recommended to use the new version of the vs. plugin provided after v2.2.8 mentioned above. The support is more complete. The generation method here does not support the rules of xmake, and the generation of projects such as qt.
 
 ```bash
 $ xmake project -k [vs2008|vs2013|vs2015|..]

zh-cn/plugin/builtin_plugins.md

@@ -396,7 +396,7 @@ $ xmake project -k [vsxmake2010|vsxmake2013|vsxmake2015|..] -m "debug,release"
 
 #### 使用vs内置编译机制
 
->! 建议尽量使用上文提到的v2.2.8之后提供的新版的vs生成插件，支持更加完善，此处的生成方式不支持xmake的rules，以及对qt等工程的生成。
+!> 建议尽量使用上文提到的v2.2.8之后提供的新版的vs生成插件，支持更加完善，此处的生成方式不支持xmake的rules，以及对qt等工程的生成。
 
 ```console
 $ xmake project -k [vs2008|vs2013|vs2015|..]