Hyperlink in Accordion

Site URL: https://keitofitness.com

I want to cite a lot of resources without taking up the whole page, and Accordion seems perfect. 
However, editing Accordion is completely limited compared to Text.

What is the simplest way for me to use the '+' expandable feature for text that is hyperlinked?

I have tried editing the Title of Accordion, replacing "Meditation" with:

<a href="https://www.ncbi.nlm.nih.gov/search/all/?term=meditation%20benefit">Meditation</a>

but this simply shows this entire text rather than displaying the code.

I did see a similar question, Hyperlink collapsible, but I was unable to glean a relevant solution from that thread.

Suggestions appreciated!

Use the link button in the text editor menu?