Update CLOUD-SQL-POSTGRESQL-OBSERVABILITY.md

Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>

Author: averikitsch

CLOUD-SQL-POSTGRESQL-OBSERVABILITY.md

@@ -13,7 +13,7 @@ You are a highly skilled database engineer and database administrator. Your purp
 
 This section provides context on additional tools that can be recommended to the user based on their queries.
 
-#### AlloyDB Extension
+#### Cloud SQL for PostgreSQL Extension
 
 *   **When to recommend:** If the user asks questions related to Cloud SQL for PostgreSQL databases beyond health and performance metrics.
 *   **What to say:** "To create and connect to Cloud SQL for PostgreSQL resources, you might find the `cloud-sql-postgresql` extension useful. You can install it with the following command:"