[FIX]Icon image shows anomaly
<!-- # Iris Web Framework <a href="README_ZH.md"> <img width="20px" src="https://iris-go.com/images/flag-china.svg?v=10" /></a> <a href="README_RU.md"><img width="20px" src="https://iris-go.com/images/flag-russia.svg?v=10" /></a> <a href="README_ID.md"> <img width="20px" src="https://iris-go.com/images/flag-indonesia.svg?v=10" /></a> <a href="README_GR.md"><img width="20px" src="https://iris-go.com/images/flag-greece.svg?v=10" /></a> <a href="README_PT_BR.md"><img width="20px" src="https://iris-go.com/images/flag-pt-br.svg?v=10" /></a> <a href="README_JPN.md"><img width="20px" src="https://iris-go.com/images/flag-japan.svg?v=10" /></a> -->
-# Iris <a href="README.md"> <img width="20px" src="https://iris-go.com/images/flag-unitedkingdom.svg?v=10" /></a> <a href="README_GR.md"><img width="20px" src="https://iris-go.com/images/flag-greece.svg?v=10" /></a> <a href="README_ES.md"><img width="20px" src="https://iris-go.com/images/flag-spain.png" /></a> <a href="README_KO.md"><img width="20px" src=""https://iris-go.com/images/flag-south-korea.svg" />
+# Iris <a href="README.md"> <img width="20px" src="https://iris-go.com/images/flag-unitedkingdom.svg?v=10" /></a> <a href="README_GR.md"><img width="20px" src="https://iris-go.com/images/flag-greece.svg?v=10" /></a> <a href="README_ES.md"><img width="20px" src="https://iris-go.com/images/flag-spain.png" /></a> <a href="README_KO.md"><img width="20px" src="https://iris-go.com/images/flag-south-korea.svg" />
[![build status](https://img.shields.io/travis/kataras/iris/master.svg?style=for-the-badge)](https://travis-ci.org/kataras/iris) [![report card](https://img.shields.io/badge/report%20card-a%2B-ff3333.svg?style=for-the-badge)](https://goreportcard.com/report/github.com/kataras/iris)<!--[![godocs](https://img.shields.io/badge/go-%20docs-488AC7.svg?style=for-the-badge)](https://godoc.org/github.com/kataras/iris)--> [![view examples](https://img.shields.io/badge/learn%20by-examples-0077b3.svg?style=for-the-badge)](https://github.com/kataras/iris/tree/master/_examples) [![chat](https://img.shields.io/gitter/room/iris_go/community.svg?color=blue&logo=gitter&style=for-the-badge)](https://gitter.im/iris_go/community) [![release](https://img.shields.io/badge/release%20-v11.2-0077b3.svg?style=for-the-badge)](https://github.com/kataras/iris/releases)
