Update Dropzone repository url

Author: rpaggi

readme.md

@@ -43,7 +43,7 @@ Setup consists of 3 steps:
 | Library | Wiki | single & chunk upload | simultaneous uploads | In [example project](https://github.com/pionl/laravel-chunk-upload-example) | Author |
 |---- |----|----|----| ---- | ---- |
 | [resumable.js](https://github.com/23/resumable.js) | [Wiki](https://github.com/pionl/laravel-chunk-upload/wiki/resumable-js) | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | [@pionl](https://github.com/pionl) |
-| [DropZone](https://gitlab.com/meno/dropzone/) | [Wiki](https://github.com/pionl/laravel-chunk-upload/wiki/dropzone) | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | [@pionl](https://github.com/pionl) |
+| [DropZone](https://github.com/dropzone/dropzone) | [Wiki](https://github.com/pionl/laravel-chunk-upload/wiki/dropzone) | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | [@pionl](https://github.com/pionl) |
 | [jQuery-File-Upload](https://github.com/blueimp/jQuery-File-Upload) | [Wiki](https://github.com/pionl/laravel-chunk-upload/wiki/jquery-file-upload)  | :heavy_check_mark: | :heavy_multiplication_x: | :heavy_check_mark: | [@pionl](https://github.com/pionl) |
 | [Plupload](https://github.com/moxiecode/plupload) | [Wiki](https://github.com/pionl/laravel-chunk-upload/wiki/plupload) | :heavy_check_mark: | :heavy_multiplication_x: | :heavy_multiplication_x: | [@pionl](https://github.com/pionl) |
 | [simple uploader](https://github.com/simple-uploader) | :heavy_multiplication_x: | :heavy_check_mark: | :heavy_multiplication_x: | :heavy_multiplication_x: | [@dyktek](https://github.com/dyktek) |