fix link to dockerhub in the badge

Author: umputun

README.md

@@ -26,7 +26,7 @@ Reproxy is a simple edge HTTP(s) server / reverse proxy supporting various provi
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 <div align="center">
 
-[![build](https://github.com/umputun/reproxy/actions/workflows/ci.yml/badge.svg)](https://github.com/umputun/reproxy/actions/workflows/ci.yml)&nbsp;[![Coverage Status](https://coveralls.io/repos/github/umputun/reproxy/badge.svg?branch=master)](https://coveralls.io/github/umputun/reproxy?branch=master)&nbsp;[![Go Report Card](https://goreportcard.com/badge/github.com/umputun/reproxy)](https://goreportcard.com/report/github.com/umputun/reproxy)&nbsp;[![Docker Automated build](https://img.shields.io/docker/automated/jrottenberg/ffmpeg.svg)](https://hub.docker.com/repository/docker/umputun/reproxy)
+[![build](https://github.com/umputun/reproxy/actions/workflows/ci.yml/badge.svg)](https://github.com/umputun/reproxy/actions/workflows/ci.yml)&nbsp;[![Coverage Status](https://coveralls.io/repos/github/umputun/reproxy/badge.svg?branch=master)](https://coveralls.io/github/umputun/reproxy?branch=master)&nbsp;[![Go Report Card](https://goreportcard.com/badge/github.com/umputun/reproxy)](https://goreportcard.com/report/github.com/umputun/reproxy)&nbsp;[![Docker Hub](https://img.shields.io/docker/automated/jrottenberg/ffmpeg.svg)](https://hub.docker.com/r/umputun/reproxy)
 
 </div>