fixed broken badge URL

Author: JamesMessinger

readme.md

@@ -1,7 +1,7 @@
 # Version-Bump-Prompt
 
 [![Build Status](https://api.travis-ci.org/BigstickCarpet/version-bump-prompt.svg?branch=master)](https://travis-ci.org/BigstickCarpet/version-bump-prompt)
-[![Windows Build Status](https://ci.appveyor.com/api/projects/status/bigstickcarpet/version-bump-prompt?svg=true&failingText=Windows%20build%20failing&passingText=Windows%20build%20passing)](https://ci.appveyor.com/project/BigstickCarpet/version-bump-prompt/branch/master)
+[![Windows Build Status](https://ci.appveyor.com/api/projects/status/github/bigstickcarpet/version-bump-prompt?svg=true&failingText=Windows%20build%20failing&passingText=Windows%20build%20passing)](https://ci.appveyor.com/project/BigstickCarpet/version-bump-prompt/branch/master)
 
 [![Dependencies](https://david-dm.org/BigstickCarpet/version-bump-prompt.svg)](https://david-dm.org/bigstickcarpet/version-bump-prompt)
 [![Codacy Score](https://api.codacy.com/project/badge/Grade/69891525ae984781996106144fda276c)](https://www.codacy.com/public/jamesmessinger/version-bump-prompt)