Update modules/ROOT/pages/backup-restore/online-backup.adoc

Co-authored-by: Nick Giles <[email protected]>

Author: NataliaIvakina

modules/ROOT/pages/backup-restore/online-backup.adoc

@@ -469,7 +469,7 @@ By default, a differential backup (`--type=DIFF`) uses the *most recent non-emp
 
 The `--prefer-diff-as-parent` option changes this behavior and allows you to use the *latest differential* backup as its parent, even if a newer full backup exists. 
 
-This apprroach allows you to maintain a chain of differential backups for all transactions and restore to any point in time.
+This approach allows you to maintain a chain of differential backups for all transactions and restore to any point in time.
 Without this option, the transactions between the last full backup and a previous differential backup cannot be backed up as individual transactions.
 
 To use the `--prefer-diff-as-parent` option, set it to `true`.