Better handle pluralization

resources/qml/TimelineView.qml

@@ -208,7 +208,7 @@ Item {
             Layout.alignment: Qt.AlignHCenter
 
             MatrixText {
-                text: qsTr("%1 member(s)").arg(room ? room.roomMemberCount : 0)
+                text: qsTr("%n member(s)", "", room ? room.roomMemberCount : 0)
                 cursorShape: Qt.PointingHandCursor
             }