Couldn't Enable master branch /docs folder for publishing

I have created my folder under master branch , after going to settings i didn’t find the third option i.e master branch /docs folder source to publish my site .

can visit this . please let me know how i will get to publish my sit whose code is in Mod2Soln in my respective repository . Thank you

It doesn’t look like there’s a folder called docs on the master branch of this repository. It looks like you’ve instead created a branch called docs inside this repository.

You’ll need to create a folder called docs instead then move your site’s content inside it before you can choose that as your site’s publishing source.