Fix continuous integration status badged

https://docs.github.com/en/actions/managing-workflow-runs/
adding-a-workflow-status-badge

Signed-off-by: Felipe Ruhland <[email protected]>

Author: feliperuhland

README.md

@@ -1,6 +1,6 @@
 # Docker SDK for Python
 
-[![Build Status](https://travis-ci.org/docker/docker-py.svg?branch=master)](https://travis-ci.org/docker/docker-py)
+[![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/)
 
 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.