Improve the "/" prefix.

[H644b]

I know this sounds extremely nitpicky and stupid but it is extremely annoying. When I copy errors from Xcode, it includes the file directory. However when I paste it into Copilot, it assumes I want to run "/releaseNotes" just because of the "/" and thus when I click enter shows the release notes instead of the answer to the error. I have to manually click the small button on the bottom right to send the error.

[testforstephen]

fixed in Pre-release 0.35.120