Add torchforge docs site link to README.md (meta-pytorch#498)

Author: svekars

README.md

@@ -22,7 +22,7 @@ Key features:
 
 ## 📖 Documentation (Coming Soon)
 
-View torchforge's hosted documentation (coming soon)
+View torchforge's hosted documentation: https://meta-pytorch.org/torchforge.
 
 ## Tutorials