docs: change community links (#98)

Changes community links from slack to discord server.

README.md

@@ -79,10 +79,10 @@ We are open to collaboration! If you want to start contributing you only need to
 2.	Create a PR solving the issue.
 3.	We would review every PR and either accept or ask for revisions.
 
-You can also join the discussions on the #data-quality channel on our [Slack](http://slack.ydata.ai) and request features/bug fixes by opening issues on our repository.
+You can also join the discussions on our [Discord Community](https://discord.com/invite/mw7xjJ7b7s) and request features/bug fixes by opening issues on our repository.
 
 ## Support
-For support in using this library, please join the #help Slack channel. The Slack community is very friendly and great about quickly answering questions about the use and development of the library. [Click here to join our Slack community!](http://slack.ydata.ai/)
+For support in using this library, please join our Discord server. The Discord community is very friendly and great about quickly answering questions about the use and development of the library. [Click here to join our Discord community!](https://discord.com/invite/mw7xjJ7b7s)
 
 ## License
 [GNU General Public License v3.0](https://github.com/ydataai/ydata-quality/blob/master/LICENSE)