docs: high-performance pooling options are only available in OEL images (#2136)

* high-performance pooling options are only available in OEL images

* tweak to expand OEL

* chore: comment

---------

Co-authored-by: vinckr <[email protected]>

Author: deepakprabhakara

docs/self-hosted/deployment.md

@@ -58,6 +58,12 @@ postgres://user:password@host:123/database?sslmode=verify-full
 
 ##### High-performance pooling
 
+:::note
+
+High-performance pooling is supported in Ory Enterprise License (OEL) images.
+
+:::
+
 High-performance pooling is built using [pgxpool](https://pkg.go.dev/github.com/jackc/pgx/v5/pgxpool) and provides additional
 configuration options to the ones listed under "Standard pooling".