Merge pull request #178787 from GennadNY/gennadyk101

Update concepts-extensions.md

Author: PRMerger13

articles/postgresql/flexible-server/concepts-extensions.md

@@ -93,6 +93,7 @@ The following extensions are available in Azure Database for PostgreSQL - Flexib
 > |[earthdistance](https://www.postgresql.org/docs/12/earthdistance.html)                | 1.1             | calculate great-circle distances on the surface of the Earth|
 > |[fuzzystrmatch](https://www.postgresql.org/docs/12/fuzzystrmatch.html)                | 1.1             | determine similarities and distance between strings|
 > |[hstore](https://www.postgresql.org/docs/12/hstore.html)                       | 1.6             | data type for storing sets of (key, value) pairs|
+> |[hypopg](https://github.com/HypoPG/hypopg)                                   |  1.2             | extension adding support for hypothetical indexes |
 > |[intagg](https://www.postgresql.org/docs/12/intagg.html)                     | 1.1             | integer aggregator and enumerator. (Obsolete)|
 > |[intarray](https://www.postgresql.org/docs/12/intarray.html)                     | 1.2             | functions, operators, and index support for 1-D arrays of integers|
 > |[isn](https://www.postgresql.org/docs/12/isn.html)                          | 1.2             | data types for international product numbering standards|
@@ -146,6 +147,7 @@ The following extensions are available in Azure Database for PostgreSQL - Flexib
 > |[earthdistance](https://www.postgresql.org/docs/11/earthdistance.html)                | 1.1             | calculate great-circle distances on the surface of the Earth|
 > |[fuzzystrmatch](https://www.postgresql.org/docs/11/fuzzystrmatch.html)                | 1.1             | determine similarities and distance between strings|
 > |[hstore](https://www.postgresql.org/docs/11/hstore.html)                       | 1.5             | data type for storing sets of (key, value) pairs|
+> |[hypopg](https://github.com/HypoPG/hypopg)                                   |  1.1.2            | extension adding support for hypothetical indexes |
 > |[intagg](https://www.postgresql.org/docs/11/intagg.html)                     | 1.1             | integer aggregator and enumerator. (Obsolete)|
 > |[intarray](https://www.postgresql.org/docs/11/intarray.html)                     | 1.2             | functions, operators, and index support for 1-D arrays of integers|
 > |[isn](https://www.postgresql.org/docs/11/isn.html)                          | 1.2             | data types for international product numbering standards|
@@ -209,7 +211,8 @@ To unschedule all tasks from pg_cron
 ```
 SELECT cron.unschedule(jobid) FROM cron.job;
 ```
-
+> [!NOTE]
+> pg_cron is preloaded n every Azure Database for PostgreSQL flexible server in postgres database to provide you with ability to schedule jobs to run in other databases within your PostgreSQL DB instance without compromising security. 
 ## pg_stat_statements
 
 The [pg_stat_statements extension](https://www.postgresql.org/docs/current/pgstatstatements.html) is preloaded on every Azure Database for PostgreSQL flexible server to provide you a means of tracking execution statistics of SQL statements.