DOCS-12182: Fix links to Atlas Continuous Backups

Author: stennie

source/core/backups.txt

@@ -20,7 +20,7 @@ Back Up with Atlas
 MongoDB Atlas, the official MongoDB cloud service, provides 2 fully-managed
 methods for backups:
 
-1. :atlas:`Continuous Backups </backup/continuous-backup>`, which take
+1. :atlas:`Continuous Backups </backup/continuous-backups>`, which take
    incremental backups of data in your cluster, ensuring your backups are
    typically just a few seconds behind the operational system. Atlas continuous
    backups allow you to restore from stored snapshots or from a selected point

source/tutorial/backup-and-restore-tools.txt

@@ -13,7 +13,7 @@ Back Up and Restore with MongoDB Tools
 MongoDB Atlas, the official MongoDB cloud service, provides 2 fully-managed
 methods for backups:
 
-1. :atlas:`Continuous Backups </backup/continuous-backup>`, which take
+1. :atlas:`Continuous Backups </backup/continuous-backups>`, which take
    incremental backups of data in your cluster, ensuring your backups are
    typically just a few seconds behind the operational system. Atlas continuous
    backups allow you to restore from stored snapshots or from a selected point