Edit typos and prettify code in util_rand_resp.rst

[natashawatkins]

• @mmcky is there a way to cite equations in text? the equation labels in the text didn't match the automatic equation labs. I changed the references but guessed the syntax.
• I think an article stills need citation? "XXXX Ljungqvist"
• I removed the font selection because it was producing an error

[mmcky]

Thanks @natashawatkins.

Yes you can either use a label in the math directive or you can use (label) syntax immediately after a $$

https://jupyterbook.org/en/stable/content/math.html#numbering-equations

[natashawatkins]

@mmcky I updated the equation references, thanks

[mmcky]

thanks @natashawatkins

I guess preview doesn't get built as your forked repo doesn't have netlify credentials.