fix warning

README.md

@@ -804,7 +804,7 @@ package main
 import "github.com/gin-gonic/gin"
 
 type Person struct {
-	Id string `uri:"id" binding:"required,uuid"`
+	ID string `uri:"id" binding:"required,uuid"`
 	Name string `uri:"name" binding:"required"`
 }
 
@@ -816,7 +816,7 @@ func main() {
 			c.JSON(400, gin.H{"msg": err})
 			return
 		}
-		c.JSON(200, gin.H{"name": person.Name, "uuid": person.Id})
+		c.JSON(200, gin.H{"name": person.Name, "uuid": person.ID})
 	})
 	route.Run(":8088")
 }