suggestions for RPI version for today

I’m have a fair few rpi2’s around, but i am going for rpi3, i’m sure i will make use of the 2’s at some point.

I’m following the “How to” forum thread here:- HOWTO: ConsoleWD for Raspberry PI - Setup Instructions - New version
But i’ve become stuck. I’m now at the stage of editing the config.txt file.
Is there a file that contains the config.txt data file somewhere? I understand why there isn’t a copy of this in the downloadable .tar.gz.
Is it saved as a different file extension? i’m assuming the .html file has something to do with it?

UPDATE: Don’t worry, i grabbed a config.txt from another download option