docs: Alpha -> Beta

Author: soedirgo

README.md

@@ -26,7 +26,7 @@
 - [x] Public Beta: Stable enough for most non-enterprise use-cases
 - [ ] Public: Production-ready
 
-We are currently in Public Alpha. Watch "releases" of this repo to get notified of major updates.
+We are currently in Public Beta. Watch "releases" of this repo to get notified of major updates.