When I followed the documentation https://source.tizen.org/documentation/reference/flash-device to install lthor, I appended “deb http://download.tizen.org/tools/latest–release/Ubuntu_12.10/” to sources.list, then input a command “$ sudo apt–get update” and got an error: “E: Malformed line58 in source list /etc/apt/sources.list(dist) E: The list of sources could not be read.” I have checked all letters carefully, haven’t found any wrong operation. Could anyone help me?