Update Emby.Server.Implementations/ApplicationHost.cs

Co-authored-by: Claus Vium <cvium@users.noreply.github.com>

Emby.Server.Implementations/ApplicationHost.cs

@@ -835,7 +835,7 @@ namespace Emby.Server.Implementations
                 }
                 catch (Exception ex)
                 {
-                    Logger.LogError(ex, "Error registering plugin services from {Assembly}.", pluginServiceRegistrar.Assembly);
+                    Logger.LogError(ex, "Error registering plugin services from {Assembly}.", pluginServiceRegistrator.Assembly);
                 }
             }
         }