Generate relative urls in server.js

This change will allow using server behind a reverse proxy.
webtorrent · last-g · Mar 21, 2019 · Mar 21, 2019 · 0ebbb043b77996ada5d3e2cc5105f43cd5b8353f
commit 0ebbb043b77996ada5d3e2cc5105f43cd5b8353f
diff --git a/lib/server.js b/lib/server.js
@@ -142,7 +142,7 @@ function Server (torrent, opts = {}) {
       res.statusCode = 200
       res.setHeader('Content-Type', 'text/html')
 
-      const listHtml = torrent.files.map((file, i) => `<li><a download="${file.name}" href="/${i}/${file.name}">${file.path}</a> (${file.length} bytes)</li>`).join('<br>')
+      const listHtml = torrent.files.map((file, i) => `<li><a download="${file.name}" href="${i}/${file.name}">${file.path}</a> (${file.length} bytes)</li>`).join('<br>')
 
       const html = getPageHTML(
         `${torrent.name} - WebTorrent`,