fix: make docs page work on windows (#512)

Fixes #506

frontend/routes/docs/[...id].tsx

@@ -94,7 +94,7 @@ export const handler: Handlers<Data, State> = {
  if (!files.has(id)) return ctx.renderNotFound();
 
  const title = files.get(id)!;
- const path = new URL(`../../docs/${id}.md`, import.meta.url).pathname;
+ const path = new URL(`../../docs/${id}.md`, import.meta.url);
  const markdown = await Deno.readTextFile(path);
 
  const { body, attrs } = extract(markdown);