Format error in the NextstarHandController sync function

[henhen724]

On lines 214 and 219 of Nexstar.py, each formatted string contains more curly braces than arguments given to format

214: coordinates = "{}{:08x},{:08x}".format(firstCoordinate, secondCoordinate)

219: coordinates = "{}{:04x},{:04x}".format(firstCoordinate, secondCoordinate)

This caused an indexing error and deleting the first set of braces in my library file fixed it.