(DOCSP-48483) Fixes typo.-v8.0-backport (786) (#787)

# Backport

This will backport the following commits from `master` to `v8.0`:
- [(DOCSP-48483) Fixes typo.
(#786)](10gen/docs-ops-manager#786)

<!--- Backport version: 9.6.2 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

Author: erabil-mdb

source/tutorial/query-backup.txt

@@ -77,8 +77,8 @@ Connections to these instances are over |tls-ssl|  and require
   Requests come in through the web server, which acts as a proxy to
   the :manual:`mongod </reference/program/mongod/#mongodb-binary-bin.mongod>`.
 
-Muti-Region Backups 
-~~~~~~~~~~~~~~~~~~~
+Multi-Region Backups 
+~~~~~~~~~~~~~~~~~~~~
 
 If you :ref:`enabled multi-region backups <backup-deployment>`,
 queryable backup is disabled at the cluster-level to prevent