Merge pull request #88 from github-for-unity/fixes/metrics-service-log-error

Fixing log output

Author: shana

src/GitHub.Api/Metrics/UsageTracker.cs

@@ -175,7 +175,7 @@ public void IncrementLaunchCount()
 
         public static void SetMetricsService(IMetricsService instance)
         {
-            Logger.Trace("SetMetricsService instance:{1}", instance?.ToString() ?? "Null");
+            Logger.Trace("SetMetricsService instance:{0}", instance?.ToString() ?? "Null");
             metricsService = instance;
         }