Refering to wrong parameter in comment (K_nash)

Referring to wrong parameter when checking for parameter availability in config file. 

[See here.](https://github.com/NOAA-OWP/cfe/blob/39c18a100dcb5c664900711c8f65f786642f0671/src/bmi_cfe.c#L791)

## Current behavior


## Expected behavior


## Steps to replicate behavior (include URLs)

1.


## Screenshots



