Remove extra source code link for Photo Stream

Remove extra source code link for Photo Stream.

README.md

@@ -1191,7 +1191,7 @@ See also _[Monitoring](#monitoring)_
 - [PhotoLight](https://github.com/thibaud-rohmer/PhotoLight) - The easiest photo gallery there is. `GPL-3.0` `PHP`
 - [Photonix](https://photonix.org/) - A new web-based photo management application with object recognition, location awareness, color analysis and other ML algorithms. ([Demo](https://demo.photonix.org/), [Source Code](https://github.com/damianmoore/photonix)) `AGPL-3.0` `Python`
 - [PhotoPrism](https://photoprism.org) - Personal photo management powered by Go and Google TensorFlow.  Browse, organize, and share your personal photo collection, using the latest technologies to automatically tag and find pictures. ([Source Code](https://github.com/photoprism/photoprism)) `MIT` `Go`
-- [Photo Stream](https://github.com/maxvoltar/photo-stream) - Minimalist self-hosted photo stream. ([Demo](https://maxvoltar.photo/), [Source Code](https://github.com/maxvoltar/photo-stream)) `MIT` `Ruby`
+- [Photo Stream](https://github.com/maxvoltar/photo-stream) - Minimalist self-hosted photo stream. ([Demo](https://maxvoltar.photo/)) `MIT` `Ruby`
 - [Piwigo](http://piwigo.org/) - Photo gallery software for the web, built by an active community of users and developers. ([Demo](http://piwigo.org/demo/), [Source Code](https://github.com/Piwigo/Piwigo)) `GPL-2.0` `PHP`
 - [Plumi](http://blog.plumi.org/) - Create your own sophisticated video-sharing site. ([Source Code](https://github.com/plumi/plumi.app)) `GPL-2.0` `Python`
 - [Quru Image Server](https://quruimageserver.com/) - High performance dynamically resizing image server offering directory based access control cropping, rotation, color management and other tools. ([Demo](https://quruimageserver.com), [Source Code](https://github.com/quru/qis)) `AGPL-3.0` `Python`