chore: clarify version mismatch message

lact-gui/src/app.rs

@@ -161,7 +161,7 @@ impl AsyncComponent for AppModel {
         let devices = devices_buf.inner().expect("Could not access devices");
 
         if system_info.version != GUI_VERSION || system_info.commit.as_deref() != Some(GIT_COMMIT) {
-            let err = anyhow!("Version mismatch between GUI and daemon ({GUI_VERSION}-{GIT_COMMIT} vs {}-{})! Make sure you have restarted the service if you have updated LACT.", system_info.version, system_info.commit.as_deref().unwrap_or_default());
+            let err = anyhow!("Version mismatch between GUI and daemon ({GUI_VERSION}-{GIT_COMMIT} vs {}-{})! If you have updated LACT, you need to restart the service with `sudo systemctl restart lactd`.", system_info.version, system_info.commit.as_deref().unwrap_or_default());
             sender.input(AppMsg::Error(err.into()));
         }