Fix broken badge link in README.md

Author: farlee2121

README.md

@@ -3,8 +3,7 @@
 
 <p align="center">
 <a href="https://travis-ci.org/haf/expecto"><img alt="Linux Build" src="https://travis-ci.org/haf/expecto.svg?branch=master"></a>
-<a href="https://ci.appveyor.com/project/haf/expecto"><img alt="Windows Build" src="https://ci.appveyor.com/api/projects/status/mscx44sh1ci3xdlr?svg=true&branch=master"></a>
-<a href="https://www.nuget.org/packages/expecto"><img alt="Nuget" src="https://buildstats.info/nuget/expecto"></a>
+<a href="https://www.nuget.org/packages/expecto"><img alt="Nuget" src="https://img.shields.io/nuget/dt/Expecto"></a>
 <img src="https://img.shields.io/github/languages/top/haf/expecto?color=%23b845fc">
 <a href="https://opensource.org/licenses/Apache-2.0"><img alt="License - Apache 2.0" src="https://img.shields.io/badge/License-Apache%202.0-blue.svg"></a>
 <a href="https://github.com/sponsors/haf" title="Sponsor this"><img src="https://img.shields.io/static/v1?label=Sponsor&message=%E2%9D%A4&logo=GitHub&color=red" /></a>