Rename Copy Link to Copy Room Link

Being explicit is clearer when this context menu applies to DM rooms, to make it clear that the link will be to the room and not to the person

src/components/views/rooms/RoomTile.tsx

@@ -530,7 +530,7 @@ export default class RoomTile extends React.PureComponent<IProps, IState> {
                     ) : null}
                     <IconizedContextMenuOption
                         onClick={this.onCopyRoomClick}
-                        label={_t("Copy Link")}
+                        label={_t("Copy Room Link")}
                         iconClassName="mx_RoomTile_iconCopyLink"
                     />
                     <IconizedContextMenuOption