fix weird link behavior

site.js

@@ -24,7 +24,17 @@ async function urlCollector(url, path, file) {
     let links = body('a');
     let urls = [];
     links.each(function(i, link) {
-        urls.push(body(link).attr('href'))
+        let h = body(link).attr('href');
+        if (!h)  return;
+        h = h.trim();
+        if (h.startsWith('./') && h.startsWith('../')) {
+            h = `${url}/h`;
+        } else if (h.startsWith('/')) {
+            let u = new URL(url);
+            u.pathname = h;
+            urls.push(u.toString())
+        }
+        urls.push(h)
     })
 
     return urls;