Apply suggestions from code review

Author: baywet

.nuget/nuget.config

@@ -2,5 +2,6 @@
 <configuration>
   <packageSources>
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
+    <add key="O365 Exchange ADO" value="https://o365exchange.pkgs.visualstudio.com/_packaging/MicrosoftGraph/nuget/v3/index.json" protocolVersion="3" />
   </packageSources>
-</configuration>
+</configuration>