Fix wrong indentation

Birgit Schachler · Birgit Schachler · commit cf87e7460e3f · 2017-05-17T13:30:27.000+02:00
diff --git a/windpowerlib/wind_turbine.py b/windpowerlib/wind_turbine.py
@@ -173,7 +173,7 @@ def restructure_data():
             filename = 'cp_curves.csv'
             self.cp_values, p_nom = restructure_data()
         if self.nominal_power is None:
-                self.nominal_power = p_nom
+            self.nominal_power = p_nom
         return self
 
 
