chore: update readme

Author: willruggiano

README.md

@@ -1,5 +1,7 @@
 # PostgreSQL implementation of JSON Patch
 
+(tested on Postgres 14+)
+
 [https://datatracker.ietf.org/doc/html/rfc6902]
 
 ```sql
@@ -13,6 +15,5 @@ select jsonb_patch(
 (1 row)
 ```
 
-Compatible (I think) with PostgreSQL 14+.
-See [./test.sql](./test.sql) for more examples.
 I have not yet written tests for A.11-A.15 from the RFC.
+See [./test.sql](./test.sql) for more examples.