WIP: Fix documentation

Author: jeltz

CONTRIBUTING.md

@@ -69,7 +69,7 @@ To build `pg_tde` from source code, you require the following:
 * git
 * Meson or make
 * gcc or clang
-* Percona Server for PostgreSQL 17 or later
+* Percona Server for PostgreSQL 16 or later
 
 Refer to the [Building from source code](https://github.com/percona/pg_tde?tab=readme-ov-file#building-from-sources-for-community-postgresql) section for guidelines.
 

README.md

@@ -25,7 +25,7 @@ Transparent Data Encryption offers encryption at the file level and solves the p
 
 This access method:
 
-- Works only with [Percona Server for PostgreSQL 17](https://docs.percona.com/postgresql/17/postgresql-server.html) or [Percona Server for PostgreSQL 18](https://docs.percona.com/postgresql/18/postgresql-server.html)
+- Works only with ??? , [Percona Server for PostgreSQL 17](https://docs.percona.com/postgresql/17/postgresql-server.html) or [Percona Server for PostgreSQL 18](https://docs.percona.com/postgresql/18/postgresql-server.html)
 - Uses extended Storage Manager and WAL APIs
 - Encrypts tuples, WAL and indexes
 - It **does not** encrypt temporary files and statistics **yet**