Update Weaviate (fixed broken link and added docs) (#2901)

README.md

@@ -1052,8 +1052,7 @@ Games, game servers and control panels.
 
 - [Mindmaps](https://github.com/drichard/mindmaps) - Open source, offline capable, mind mapping application. ([Demo](https://www.mindmaps.app)) `AGPL-3.0` `HTML5`
 - [My Mind](https://github.com/ondras/my-mind) - Web application for creating and managing mind maps. ([Demo](https://my-mind.github.io/?url=examples%2Ffeatures.mymind)) `MIT` `Javascript`
-- [Weaviate](https://github.com/semi-technologies/weaviate) - A cloud-native, realtime vector search engine integrating scalable machine learning models (GraphQL and RESTful APIs). ([Demo](https://www.semi.technology/documentation/weaviate/current/)) `BSD-3-Clause` `Go`
-
+- [Weaviate](https://weaviate.io/) - A cloud-native, realtime vector search engine integrating scalable machine learning models (GraphQL and RESTful APIs). ([Demo](https://github.com/semi-technologies/semantic-search-through-wikipedia-with-weaviate/), [Source Code](https://github.com/semi-technologies/weaviate), [Clients](https://weaviate.io/developers/weaviate/current/client-libraries/index.html)) `BSD-3-Clause` `Go`
 
 ### Learning and Courses