fixed typo

"back jobs" => "backup jobs"

Author: YanoOfQueenscastle

docs/database-engine/availability-groups/windows/overview-of-always-on-availability-groups-sql-server.md

@@ -214,7 +214,7 @@ An availability group listener is associated with a unique DNS name that serves
 
 - **Performing backup operations on secondary replicas**
 
-     The secondary replicas support performing log backups and [copy-only](../../../database-engine/availability-groups/windows/active-secondaries-backup-on-secondary-replicas-always-on-availability-groups.md) backups of a full database, file, or filegroup. You can configure the availability group to specify a preference for where backups should be performed. It's important to understand that the preference isn't enforced by SQL Server, so it has no impact on ad hoc backups. The interpretation of this preference depends on the logic, if any, that you script into your back jobs for each of the databases in a given availability group. For an individual availability replica, you can specify your priority for performing backups on this replica relative to the other replicas in the same availability group. For more information, see [Active Secondaries: Backup on secondary replicas](../../../database-engine/availability-groups/windows/active-secondaries-backup-on-secondary-replicas-always-on-availability-groups.md).
+     The secondary replicas support performing log backups and [copy-only](../../../database-engine/availability-groups/windows/active-secondaries-backup-on-secondary-replicas-always-on-availability-groups.md) backups of a full database, file, or filegroup. You can configure the availability group to specify a preference for where backups should be performed. It's important to understand that the preference isn't enforced by SQL Server, so it has no impact on ad hoc backups. The interpretation of this preference depends on the logic, if any, that you script into your backup jobs for each of the databases in a given availability group. For an individual availability replica, you can specify your priority for performing backups on this replica relative to the other replicas in the same availability group. For more information, see [Active Secondaries: Backup on secondary replicas](../../../database-engine/availability-groups/windows/active-secondaries-backup-on-secondary-replicas-always-on-availability-groups.md).
 
 - **Read-only access to one or more secondary replicas (readable secondary replicas)**