is this Gruntfile.js for uglify is the correct way to code?

module.exports = function(grunt){
    grunt.initConfig({
        pkg: grunt.file.readJSON('package.json'),
        uglify: {
            options: {
                mangle: true
            },
            my_target: {
                files: {
                    "dest/output2.min.js" : ["src/one.js"]
                }
            }//end of my_target
        }//end of uglify
    });
    grunt.loadNpmTasks('grunt-contrib-uglify');

    grunt.registerTask('default',['uglify']);
};