Will need to open a new PR in https://github.com/braver/programmingfonts
Follow the instructions in their README, https://github.com/braver/programmingfonts?tab=readme-ov-file#project-layout--contributing
Once the PR is merged and we have ServerMono on that site, then we can update the Nerd Fonts repo to include the preview link. See: ryanoasis/nerd-fonts#1895 (comment)