fix: fix webview & improve download progress

src/server/routes/webview.ts

@@ -100,7 +100,7 @@ async function webView(req: express.Request, res: express.Response) {
     if (f.extension() == "md") {
       const content = await streamToString(await f.anonymizedContent());
       res
-        .contentType("html")
+        .contentType("text/html")
         .send(marked.marked(content, { headerIds: false, mangle: false }));
     } else {
       f.send(res);