fix: Gulp watch new and deleted files

gulpfile.js

@@ -80,7 +80,7 @@ gulp.task('serve', function() {
     gulp.watch("css/src/**/*.scss", ['scss'])
     gulp.watch("js/src/**/*.js", ['js'])
     gulp.watch("templates/**/*.pug", ['pug'])
-    gulp.watch('img/**/*').on('change', browserSync.reload)
+    gulp.watch('img/**/*', browserSync.reload)
 })
 
 gulp.task('default', [ 'build', 'serve' ])