According to the community FAQ, backticks and inline links are available for the bounty remark.
What other formatting features of Markdown are also supported on Bounty remarks?
Bounty notices will support our Markdown mini format, using the same format as we allow for comments. The following will be allowed:
_italic_ and **bold** text, inline `code in backticks`, and [basic links](http://example.com).
And just like in comments: line breaks are not rendered.