Bug fixes documentation

Author: birgits

doc/modules.rst

@@ -23,7 +23,6 @@ Functions for calculating air density at hub height.
    :toctree: temp/
 
    density.temperature_gradient
-   density.temperature_interpol
    density.rho_barometric
    density.rho_ideal_gas
 

windpowerlib/modelchain.py

@@ -315,7 +315,7 @@ def run_model(self, weather, data_height):
             `v_wind` in m/s, roughness length `z0` in m, temperature
             `temp_air` in K and pressure `pressure` in Pa, as well as
             optionally wind speed `v_wind_2` in m/s and temperature
--           `temp_air_2` in K at different height.
+            `temp_air_2` in K at different height.
             If a Dictionary is used the data inside the dictionary has to be of
             the types pandas.Series or numpy.array.
         data_height : Dictionary