Doxygen docs for retrieve tally data are wrong

[wbinventor]

The documentation on how to retrieve data from the Tally class is wrong:

http://mit-crpg.github.io/PINSPEC/classTally.html#aa7963810e95fc7a91af5e007d75538c4

Instead of passing in an array, the only argument to pass in is the number of bins and a NumPy array of data is returned.