Title URL issue

```
{
"body": "⤵+ [[ID-123]](https://github.com/HarHarLinks/repo/pull/456) #456 for **[HarHarLinks/repo](https://github.com/HarHarLinks/repo)**\n\n **[HarHarLinks](https://github.com/HarHarLinks)**:\n\n > some description",
"external_url": "https://github.com/HarHarLinks/repo/pull/456",
"format": "org.matrix.custom.html",
"formatted_body": "

⤵+ [ID-123](https://github.com/HarHarLinks/repo/pull/456) #456 for HarHarLinks/repo

HarHarLinks:

\n

some description

\n",
"msgtype": "m.text",
"uk.half-shot.matrix-hookshot.github.comment": {
"id": $id
},
"uk.half-shot.matrix-hookshot.github.issue": {
"id": $id,
"number": 456,
"title": "[ID-123]",
"url": "https://github.com/HarHarLinks/repo/pull/456"
},
"uk.half-shot.matrix-hookshot.github.repo": {
"id": $other_id,
"name": "HarHarLinks/repo",
"url": "https://github.com/HarHarLinks/repo"
}
}
```

The formatted_body renders as:
> \[[ID-123](https://my.atlassian.net/browse/ID-123?atlOrigin=someIdHere)\]\(https://github.com/HarHarLinks/repo/pull/456)

About which I don't really see where it gets the Jira link (but I might not be able to see that the issue was renamed?) nor do I see how that HTML should have been generated from that markdown.

GitHub (correctly) makes from that markdown:
> [[ID-123]](https://github.com/HarHarLinks/repo/pull/456)

Start by reproducing the supplied markdown and comparing GitHub's rendering with the bridge's formatted_body, especially the nested link and unexpected Jira URL. Trace the formatting path responsible for this Matrix event; done means the rendered output preserves the original GitHub links and matches the expected markdown conversion.

Written by the indexing model from the issue text.