Update README.md

Updating readme with slack link.

Author: ndimares

README.md

@@ -1,7 +1,6 @@
 # The RESTful API Template Project [Golang]
 
-- [Website](https://www.speakeasyapi.dev/)
-- [Twitter](https://twitter.com/speakeasydev)
+[Join our slack](https://speakeasy-dev.slack.com/archives/C03QVDNMCMT) if you need any help with the template, or just want to chat about APIs!
 
 ![speakeasy-logo](https://user-images.githubusercontent.com/6267663/180816984-254daaec-a8e3-4c47-ac11-6c6d52a5e390.png)