postGIS link update

Author: hariramt

articles/postgresql/migrate/best-practices-seamless-migration-single-to-flexible.md

@@ -187,7 +187,7 @@ The [postgres_fdw module](https://www.postgresql.org/docs/current/postgres-fdw.h
 
 ### Database with postGIS extension
 
-The postgis extension has breaking changes/compat issues between different versions. Hence, the migration tool disallows migration if there is a version incompatibility. If you migrate to a Flexible server running PostgreSQL 11, this is not a problem, because FSPG11 supports same version of postGIS, which is available on Single server as well. So the migration goes ahead in this case. If you migrate to a Flexible server running PostgreSQL 12 or higher, the application should be checked against the changes in newer versions of postGIS to ensure that the application isn't impacted or the necessary changes have to be made to the Application. The [postGIS release notes page](https://postgis.net/news/) is a good starting point to understand the changes across versions. Once the changes are taken care of, raise a support request to allow-list migration for your Flexible server to a higher PostgreSQL version.
+The postgis extension has breaking changes/compat issues between different versions. Hence, the migration tool disallows migration if there is a version incompatibility. If you migrate to a Flexible server running PostgreSQL 11, this is not a problem, because FSPG11 supports same version of postGIS, which is available on Single server as well. So the migration goes ahead in this case. If you migrate to a Flexible server running PostgreSQL 12 or higher, the application should be checked against the changes in newer versions of postGIS to ensure that the application isn't impacted or the necessary changes have to be made to the Application. The [postGIS news](https://postgis.net/news/) and [release notes](https://postgis.net/docs/release_notes.html#idm45191) are a good starting point to understand the breaking changes across versions. Once the changes are taken care of, raise a support request to allow-list migration for your Flexible server to a higher PostgreSQL version.
 
 ### Database connection clean-up