fixed typo in Service

src/kernel/Init.hx

@@ -60,6 +60,6 @@ class Init {
 			KernelEvents.instance.startEventLoop();
 		});
 
-		ServiceManager.instace = new ServiceManager();
+		ServiceManager.instance = new ServiceManager();
 	}
 }

src/kernel/service/ServiceManager.hx

@@ -7,7 +7,7 @@ import lib.KVStore;
 using tink.CoreApi;
 
 class ServiceManager {
-    public static var instace: ServiceManager;
+    public static var instance: ServiceManager;
 
     private final services:Map<String,Service> = new Map();