Markdown code block mode: Everything in between colons is not rendered

[ypid]

NetBox version

• v3.0.11
• v3.0.10

Python version

3.9

Steps to Reproduce

1. Create a device type with this comment. I had to use code mode for the :joy: to prevent it from getting rendered. Copy the whole text:

```
00:14.0 USB controller [0c03]: Intel Corporation Lynx Point-LP USB xHCI HC [8086:9c31] (rev 04)
:joy:
```

2. Save.

(It is reproducible on the demo instance: https://demo.netbox.dev/dcim/device-types/11/)

Expected Behavior

It is rendered as follows (like on GitHub):

00:14.0 USB controller [0c03]: Intel Corporation Lynx Point-LP USB xHCI HC [8086:9c31] (rev 04)
:joy:

Observed Behavior

It is rendered like this:

00:14.0 USB controller [0c03]: 9c31] (rev 04)
:joy:

At first I thought that emoji support might be the issue, but that seems not to be the case. Not sure what else acts on the colons here.

Use case

I like to include the output of various commands like in this case lspci -nn in the device type because that often gives more insights than vendor docs.

[kkthxbye-code]

Caused by: a799094