fixed typo

[ci skip]

main/ui/src/main/resources/i18n/strings.properties

@@ -191,7 +191,7 @@ wrongFileAlert.instruction.0=To encrypt files, follow these steps:
 wrongFileAlert.instruction.1=1. Unlock your vault.
 wrongFileAlert.instruction.2=2. Click on "Reveal" to open the volume in your file manager.
 wrongFileAlert.instruction.3=3. Add your files to this volume.
-wrongFileAlert.link=For futher assistance, visit
+wrongFileAlert.link=For further assistance, visit
 
 # Vault Options
 ## General