This is gitworkshop. I'm using nostr-editor with Markdown enabled and clearly the markdown URL style is overriding the nostr style. I'll sort that unless nostr:npub1cesrkrcuelkxyhvupzm48e8hwn4005w0ya5jyvf9kh75mfegqx0q4kt37c, who maintainers that library, beats me too it.
Discussion
Nostr Unassuming Markup Language (NUML)
I don't recommend using the markdown extension in nostr-editor, unless it's very explicitly like writing an article. also the markdown extension is very unstable and I never battle tested it that much as I don't use it, I have intentions to remove it and upgrade to tiptap 3 which natively supports markdown.