When using headings containing a link, the linked part gets lost

[WetenSchaap]

Describe the bug

When a heading contains a link, the link is placed at the beginning of the heading, overwriting the rest of the heading.

To Reproduce

Steps to reproduce the behavior:

1. Make a document with headings with links in them:

---
title: "Bibliography"
date: 2022-11-28
draft: false
---
## 2nd level heading

### 3rd level heading

### Heading containing a [link](https://gohugo.io/), and acts weird

### Heading containing a [longer link here](https://gohugo.io/), and you see it better

2. See error:

Expected behavior
Links are simply part of the heading.

Desktop (please complete the following information):

• OS: Linux
• Browser: Firefox
• Hugo version: v0.107.0
• Latest cupper-hugo-theme

[zwbetz-gh]

Hi @WetenSchaap - thanks for reporting this. It's been fixed in 711a53b.

[zwbetz-gh]

Here's a demo of the fix, for reference: https://cupper-hugo-theme.netlify.app/heading-link-test/