Improve Nostr link handling

Fixes a bunch of problems with how Nostr links are created and replaced
in Markdown content

models/article.ts

@@ -1,7 +1,7 @@
 import { render as renderMarkdown } from "@deno/gfm";
 import { nip19 } from "@nostr/tools";
 import { NostrEvent as NEvent } from "@nostrify/nostrify";
-import { replaceNostrUris } from "../nostr.ts";
+import { replaceNostrUris } from "../nostr/links.ts";
 import config from "../config.ts";
 
 export default class Article {