Distinguish Between PolledBno055Data and Bno055Data In the XML comments

[cjsha]

We should also consider explaining something about it in the "Properties" panel in Bonsai. So that people can potentially more easily figure out why their headstage doesn't pop up in the DeviceName property drop-down if they put down the wrong Bno055Data node for the hardware they're trying to acquire data from (i.e. NP headstages require PolledBno055Data and h2-64 require Bno055Data).