Change AppendLine to Append as the macAddresses variable already ha…

…s a new line at the end.

Source/v2/Meadow.HCom/DeviceInfo.cs

@@ -88,7 +88,7 @@ public override string ToString()
             {
                 deviceInfo.AppendLine("    MAC Address - ");
             }
-            deviceInfo.AppendLine($"{macAddresses}");
+            deviceInfo.Append($"{macAddresses}");
         }
 
         deviceInfo.AppendLine();