Apply suggestion to docs/maintenance.md

docs/maintenance.md

@@ -9,7 +9,7 @@ Please take care to backup the following locations:
 * Your cluster config directory, located in the top-level sub-directory
   `clusters` in your clone of the openappstack git repository.
   Here you can find all the files generated during the `create` and `install`
-  c ommands of the CLI, together with the generated secrets are stored during
+  commands of the CLI, together with the generated secrets that are stored during
   installation.
 
 ### On your cluster