fix badge image path, it changed...

Author: petercorke

README.md

@@ -1,7 +1,7 @@
 [![PyPI version fury.io](https://badge.fury.io/py/ansitable.svg)](https://pypi.python.org/pypi/ansitable/)
 [![Anaconda version](https://anaconda.org/conda-forge/ansitable/badges/version.svg)](https://anaconda.org/conda-forge/ansitable)
 [![pyversions](https://img.shields.io/pypi/pyversions/ansitable)](https://pypi.python.org/pypi/ansitable/)
-[![Build Status](https://github.com/petercorke/bdsim/workflows/build/badge.svg?branch=master)](https://github.com/petercorke/bdsim/actions?query=workflow%3Abuild)
+[![Build Status](https://github.com/petercorke/ansitable/actions/workflows/master.yml/badge.svg)](https://github.com/petercorke/ansitable/actions?query=workflow%3Abuild)
 [![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg)](https://github.com/petercorke/ansitable/graphs/commit-activity)
 [![GitHub license](https://img.shields.io/github/license/Naereen/StrapDown.js.svg)](https://github.com/petercorke/ansitable/blob/master/LICENSE)
 [![PyPI - Downloads](https://img.shields.io/pypi/dm/ansitable)](https://pypistats.org/packages/ansitable)