optimize code

example/test.api

@@ -0,0 +1,17 @@
+info(
+    title: "type title here"
+    desc: "type desc here"
+    author: "type author here"
+    email: "type email here"
+    version: "type version here"
+)
+
+import "sys/user.api"
+
+service user-api {
+    @doc(
+        summary: 注册
+    )
+    @handler register
+    post /api/user/register (RegisterReq)
+}