Although you cannot directly convert the config.ldi to a human readable format, you can use the command setup capture complete to back up the PacketShaper configuration to a human readable file.
The example below uses the setup capture complete command to back up the PacketShaper's current configuration to config.cmd. You can then open the config.cmd file using any text editor.
PacketShaper# setup capture complete
Please confirm if you really want to proceed (YES): y
Saved complete configuration in 9.256/cmd/config.cmd