Update Dutch translation (rustdesk#14984)

Author: RijckAlex

src/lang/nl.rs

@@ -743,6 +743,6 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Display Name", "Naam Weergeven"),
         ("password-hidden-tip", "Er is een permanent wachtwoord ingesteld (verborgen)."),
         ("preset-password-in-use-tip", "Het basis wachtwoord is momenteel in gebruik."),
-        ("Enable privacy mode", ""),
+        ("Enable privacy mode", "Schakel privacymodus in"),
     ].iter().cloned().collect();
 }