minor: edit typo

Author: Sam Kleinman

source/administration/backups.txt

@@ -569,7 +569,7 @@ database. If your data corpus is small enough that:
 
 - it's possible to store the entire backup on one system, or a single
   storage device. Consider both backups of entire instances, and
-  incremental dups of data.
+  incremental dumps of data.
 
 - the state of the database at the beginning of the operation is
   not significantly different than the state of the database at the