Flatpat: add --filesystem=xdg-documents

Author: KangLin

Package/io.github.KangLin.RabbitRemoteControl.json

@@ -24,6 +24,7 @@
         "--socket=x11",
         "--device=all",
         "--filesystem=~/Documents",
+        "--filesystem=xdg-documents",
         "--talk-name=org.freedesktop.Notifications",
         "--talk-name=org.freedesktop.secrets",
         "--talk-name=org.kde.StatusNotifierWatcher",