Fixing log message

Author: StanleyGoldman

src/GitHub.Api/Platform/ProcessEnvironment.cs

@@ -25,7 +25,7 @@ public void Configure(ProcessStartInfo psi, NPath workingDirectory, bool dontSet
             if (!Environment.GitInstallPath.IsInitialized || dontSetupGit)
                 return;
 
-            Logger.Trace("Environment.GitExecutablePath", Environment.GitExecutablePath);
+            Logger.Trace("Environment.GitExecutablePath: {0}", Environment.GitExecutablePath);
 
             Guard.ArgumentNotNull(psi, "psi");