Merge pull request #3167 from thaJeztah/fix_ci_badge

README: fix link for CI status badge

Author: milas

README.md

@@ -1,6 +1,6 @@
 # Docker SDK for Python
 
-[![Build Status](https://github.com/docker/docker-py/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/docker/docker-py/actions/workflows/ci.yml/)
+[![Build Status](https://github.com/docker/docker-py/actions/workflows/ci.yml/badge.svg)](https://github.com/docker/docker-py/actions/workflows/ci.yml)
 
 A Python library for the Docker Engine API. It lets you do anything the `docker` command does, but from within Python apps – run containers, manage containers, manage Swarms, etc.