ScriptableFilter and ScriptableHandler configuration reference is missing references to logger parameter

I am not sure why logger was removed as an item that is available to scriptable components from the configuration reference for ScriptableFilter and ScriptableHandler, a logging component is still made available to scripts, it is just a different type now that we have switched logging frameworks.

Since OPENIG-1201 we add a unique "logger" instance depending on the name of the script:

    private Map<String, Object> enrichBindings(final Bindings source, final Context context) throws ScriptException {
.....
        bindings.put("logger", getScriptLogger());
.....       

    private Logger getScriptLogger() {
        return LoggerFactory.getLogger(format("%s.%s", this.getClass().getName(), name));
    }