example_get_channel_data_and_count wrong units

[kyczawon]

In the example_get_channel_data_and_count file, the units given in the comment for the energy channels are watt-hours (Wh), while the documentation says it is in Joules (J).

https://www.qoitech.com/help/tcpserver/index.html#recording_downsample_channel

[whoisthebear]

Thank you for spotting this. This will be changed.