Code optimized (#523)

* optimized markdown generator

* optimized markdown generator

* optimized markdown generator

* add more comment

* add comment

* add comment

* add comments for rpc tool

* add comments for model tool

* add comments for model tool

* add comments for model tool

* add comments for config tool

* add comments for config tool

* add comments

* add comments

* add comments

* add comments

* add comment

* remove rpc main head info

* add comment

* optimized

Co-authored-by: anqiansong <anqiansong@xiaoheiban.cn>

tools/goctl/model/sql/builderx/builder.go

@@ -9,14 +9,17 @@ import (
 
 const dbTag = "db"
 
+// NewEq wraps builder.Eq
 func NewEq(in interface{}) builder.Eq {
 	return builder.Eq(ToMap(in))
 }
 
+// NewGt wraps builder.Gt
 func NewGt(in interface{}) builder.Gt {
 	return builder.Gt(ToMap(in))
 }
 
+// ToMap converts interface into map
 func ToMap(in interface{}) map[string]interface{} {
 	out := make(map[string]interface{})
 	v := reflect.ValueOf(in)
@@ -76,6 +79,7 @@ func FieldNames(in interface{}) []string {
 	return out
 }
 
+// RawFieldNames converts golang struct field into slice string
 func RawFieldNames(in interface{}) []string {
 	out := make([]string, 0)
 	v := reflect.ValueOf(in)