qt:compositor: Fixed wrong service file name in do_install

recipes-qt/qt-multi-screen-compositor/qt-multi-screen-compositor.bb

@@ -39,7 +39,7 @@ do_install () {
     if ${@bb.utils.contains('DISTRO_FEATURES','systemd','true','false',d)}; then
         # Systemd Unit
         install -d ${D}${systemd_system_unitdir}/
-        install -D -p -m 0644 ${WORKDIR}/qt-multi-screen-compositor@.service ${D}${systemd_system_unitdir}/qt-multi-screen-compositor.service
+        install -D -p -m 0644 ${WORKDIR}/qt-multi-screen-compositor.service ${D}${systemd_system_unitdir}/qt-multi-screen-compositor.service
     fi
 }