Add doc

src/main/kotlin/top/fatweb/api/config/WebMvcRegistrationsConfig.kt

@@ -5,6 +5,12 @@ import org.springframework.context.annotation.Configuration
 import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping
 import top.fatweb.api.util.ApiResponseMappingHandlerMapping
 
+/**
+ * Web MVC config
+ *
+ * @author FatttSnake
+ * @since 1.0.0
+ */
 @Configuration
 class WebMvcRegistrationsConfig : WebMvcRegistrations {
     override fun getRequestMappingHandlerMapping(): RequestMappingHandlerMapping = ApiResponseMappingHandlerMapping()