fix generate api demo (#19)

Co-authored-by: kingxt <dream4kingxt@163.com>

tools/goctl/api/apigen/gen.go

@@ -27,21 +27,16 @@ type response struct{
 	// TODO: add members here and delete this comment
 }
 
-@server(
-    port: // TODO: add port here and delete this comment
-)
 service {{.serviceName}} {
 	@server(
 		handler: // TODO: set handler name and delete this comment
 	)
-	// TODO: edit the below line
+	get /users/id/:userId(request) returns(response)
-	// get /users/id/:userId(request) returns(response)
 
 	@server(
 		handler: // TODO: set handler name and delete this comment
 	)
-	// TODO: edit the below line
+	post /users/create(request)
-	// post /users/create(request)
 }
 `