`$1`

Unfortunately I don't think there's a clear answer to this:

• There are some messages that are displayed to the console as plain text. In this case the grave accents will of course render literally. I don't think there's any way for these to display translated right now, but I'm not 100% sure of that.
• There are some messages that are displayed on the website as ReMarkup. In this case, the ` will be interpreted as monospace.
• There are some messages that are used in both contexts (i.e `arc lint` messages)

Unfortunately there's no good way of determining in which category a message is in without reading the code. Phabricator i18n is a bit of a mess. Don't blame me, I just picked up this project after it was even more badly abandoned (no new translations were deployed at all between ~2021 and April 2024), and am slowly triaging through old requests made on translatewiki.net related to Phabricator and dealing with them (which is why I'm responding to this four years later)