Update NuGet.config to use the aspnetcirelease feed instead of aspnetcidev

Author: kevinchalet

NuGet.config

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <packageSources>
-    <add key="AspNetCiDev" value="https://www.myget.org/F/aspnetcidev/api/v3/index.json" />
+    <add key="AspNetCiRelease" value="https://www.myget.org/F/aspnetcirelease/api/v3/index.json" />
     <add key="NuGet" value="https://api.nuget.org/v3/index.json" />
     <add key="aspnet-contrib" value="https://www.myget.org/F/aspnet-contrib/api/v3/index.json" />
   </packageSources>