Update v3.md

Author: DavidMStraub

docs/install_setup/v3.md

@@ -21,4 +21,4 @@ Gramps Web API 3.0.0 | –
 Gramps Web (Frontend) 25.?.? | –
 Gramps Web Sync Addon for Gramps 6.0 | –
 PostgreSQL Addon for Gramps 6.0 | –
-SharedPostgreSQL Addon for Gramps 6.0 | –
+SharedPostgreSQL Addon 0.1.12 | 2025-03-20