Fix log warn

Author: Euphillya

api/src/main/java/fr/euphyllia/skyllia/api/commands/SubCommandInterface.java

@@ -17,7 +17,7 @@
  */
 public interface SubCommandInterface {
 
-    private Logger log = LoggerFactory.getLogger(SubCommandInterface.class);
+    Logger log = LoggerFactory.getLogger(SubCommandInterface.class);
 
     /**
      * Legacy method to handle the execution of a sub-command.