chore: fix discussions link

Author: vmihailenco

README.md

@@ -11,7 +11,8 @@
 [![Documentation](https://img.shields.io/badge/redis-documentation-informational)](https://redis.uptrace.dev/)
 [![Chat](https://discordapp.com/api/guilds/752070105847955518/widget.png)](https://discord.gg/rWtp5Aj)
 
-- To ask questions, join [Discord](https://discord.gg/rWtp5Aj) or use [Discussions](/discussions).
+- To ask questions, join [Discord](https://discord.gg/rWtp5Aj) or use
+  [Discussions](https://github.com/go-redis/redis/discussions).
 - [Newsletter](https://blog.uptrace.dev/newsletter/) to get latest updates.
 - [Documentation](https://redis.uptrace.dev)
 - [Reference](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc)