fix(desktop): various fixes

- It's not a console application, so Terminal must be false.
- It can open only one file at once, so %f should be used instead of %F on the exec line.
- NoDisplay=true should be added, because the application cannot be launched without the file parameter.

src/po/swappy.desktop.in

@@ -9,8 +9,9 @@ Comment[de]=Ein natives Wayland Bildschirmfoto-Bearbeitungswerkzeug
 Comment[fr]=Un outil d'édition de capture d'écran avec support natif pour Wayland
 Comment[pt_BR]=Uma ferramenta de edição de snapshot nativa do Wayland
 TryExec=swappy
-Exec=swappy -f %F
-Terminal=true
+Exec=swappy -f %f
+Terminal=false
+NoDisplay=true
 Type=Application
 Keywords=wayland;snapshot;annotation;editing;
 Icon=swappy