Fix slash

Author: stefano-ottolenghi

modules/ROOT/pages/database-administration/standard-databases/seed-from-uri.adoc

@@ -200,7 +200,7 @@ Where `accessKey` and `secretKey` are provided by AWS.
 
 | `file:`
 | `FileSeedProvider`
-| `\file://tmp/backup1.backup`
+| `\file:///tmp/backup1.backup`
 
 | `ftp:`
 | `URLConnectionSeedProvider`