You can use a writer field in the Vue component. Have a look at the default text block’s Vue component: text | Kirby
<template>
<k-writer
v-for="item in content.accordion"
:value="item.details"
/>
</template>
This will probably not work but you get the idea.
Alternatively you can use the v-html
attribute:
<template>
<details v-for="item in content.accordion">
<div v-html="item.details"></div>
</details>
</template>