Fix bug in comment

Author: uvchik

windpowerlib/wind_farm.py

@@ -82,7 +82,7 @@ class WindFarm(object):
     ...     'turbine_type': 'V90/2000',
     ...     'nominal_power': 2e6}
     >>> v90 = WindTurbine(**vestasV90)
-    >>> # turbine fleet as DataFrame with number of turbines provided (1)
+    >>> # turbine fleet as DataFrame
     >>> wind_turbine_fleet = pd.DataFrame(
     ...     {'wind_turbine': [e126, v90],
     ...      'number_of_turbines': [6, None],
@@ -91,7 +91,7 @@ class WindFarm(object):
     >>> print(example_farm.nominal_power)
     31200000.0
     >>> # turbine fleet as a list of WindTurbineGroup objects using the
-    >>> # 'to_group' method (2).
+    >>> # 'to_group' method.
     >>> wind_turbine_fleet = [e126.to_group(6),
     ...                       v90.to_group(total_capacity=3 * 2e6)]
     >>> example_farm = wind_farm.WindFarm(wind_turbine_fleet, name='my_farm')