missing words in sentence

docs/markdown/examples.md

@@ -8,7 +8,7 @@ autorestic exec -av -- snapshots
 
 ## Unlock a locked repository
 
-This can come in handy if a backup process crashed or if it was accidentally cancelled. Then the repository would still be locked without an actual process using it. Only do this if you know what you are sure no other process is actually reading/writing to the repository of course.
+This can come in handy if a backup process crashed or if it was accidentally cancelled. Then the repository would still be locked without an actual process using it. Only do this if you know what you are doing and are sure no other process is actually reading/writing to the repository of course.
 
 ```bash
 autorestic exec -b my-backend -- unlock