Fix pgsm version for 16.8

Author: nastena1606

docs/release-notes-v16.8.md

@@ -43,7 +43,7 @@ The following is the list of extensions available in Percona Distribution for Po
 | [pg_gather](https://github.com/jobinau/pg_gather) | v29 | an SQL script for running the diagnostics of the health of PostgreSQL cluster |
 | [pgpool2](https://git.postgresql.org/gitweb/?p=pgpool2.git;a=summary) | 4.5.5 | a middleware between PostgreSQL server and client for high availability, connection pooling, and load balancing. |
 | [pg_repack](https://github.com/reorg/pg_repack) | 1.5.2 | rebuilds PostgreSQL database objects |
-| [pg_stat_monitor](https://github.com/percona/pg_stat_monitor) | 2.1.0 | collects and aggregates statistics for PostgreSQL and provides histogram information. |
+| [pg_stat_monitor](https://github.com/percona/pg_stat_monitor) | {{pgsmversion}} | collects and aggregates statistics for PostgreSQL and provides histogram information. |
 | [pgvector](https://github.com/pgvector/pgvector) | v0.8.0 | A vector similarity search for PostgreSQL |
 | [PostGIS](https://github.com/postgis/postgis) | 3.3.8 | a spatial extension for PostgreSQL. |
 | [PostgreSQL Commons](https://salsa.debian.org/postgresql/postgresql-common) | 270 | PostgreSQL database-cluster manager. It provides a structure under which multiple versions of PostgreSQL may be installed and/or multiple clusters maintained at one time. |