### Bug description

Big quarto fan here - congrats on building such a fabulous system.

I'm running into a small Mastodon issue.

The following

```
  navbar:
    right:
      - icon: mastodon
        href: https://mastodon.social/@marcelsalathe
        aria-label: Mastodon
```

Renders as 
```
<a class="nav-link" href="https://mastodon.social/(marcelsalathe?)" rel="" target=""><i class="bi bi-mastodon" role="img" aria-label="Mastodon">
```

Everything nice, except the broken URL.

I could add `ref: https://mastodon.social/%40marcelsalathe` (this is what I currently do at [https://www.digitalepibook.com/](https://www.digitalepibook.com/) but I'd prefer the original URL to render correctly in the HTML source code.

My relevant quarto check:
```
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.1: OK
      Dart Sass version 1.55.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.3.272
      Path: /Applications/quarto/bin

[✓] Checking basic markdown render....OK

```
I'm on MacOS 12.5.1

### Checklist

- [x] Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [x] Please [format your issue](https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us) so it is easier for us to read the bug report.
- [x] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [x] Please document the operating system you're running. If on Linux, please provide the specific distribution.
- [x] Please provide the output of `quarto check` so we know which version of quarto and its dependencies you're running.
dragonstyle
2023-03-30T11:06:12Z
marcelsalathe
duplicate triaged-to
closed
Mastodon link bug
https://github.com/quarto-dev/quarto-cli/issues/5035