changed reference to correct function within empropagation. Need to s…

…etup documentation for the atmospheric propagation constant functions and also push the atmospheric attenuation branch through to the main one.

lyceanem/electromagnetics/empropagation.py

@@ -4902,7 +4902,7 @@ def calculate_atmospheric_propagation_constant(
     propagation constant : complex
 
     """
-    alpha = calculate_attenuation_constant(
+    alpha = calculate_total_gaseous_attenuation(
         frequency, temperature, pressure, water_vapor_density
     )
     beta = calculate_phase_constant(