fix: make sure include paths are correct

handlers/html.ts

@@ -4,7 +4,7 @@
  */
 
 import * as path from '@std/path';
-import { md_to_html } from '@andyburke/serverus/handlers/markdown';
+import { md_to_html } from './markdown.ts';
 
 // https://stackoverflow.com/a/75205316
 const replaceAsync = async (str: string, regex: RegExp, asyncFn: (match: any, ...args: any) => Promise<any>) => {