refactor: shorten variable names

src/index.js

@@ -13,16 +13,16 @@ async function initialize() {
         + ' at ' + (new Date()).toISOString()
     );
     console.log("https://ipfs.io/ipfs/" + pin.cid.toString());
-    const pin_list_tag = document.createElement('ul');
+    const pin_list = document.createElement('ul');
     for await(const { cid, type } of node.pin.ls()) {
-        const pin_item_tag = document.createElement('li');
-        const pin_link_tag = document.createElement('a');
-        pin_link_tag.href = "https://dweb.link/ipfs/" + cid.toString();
-        pin_link_tag.innerText = cid.toString();
-        pin_item_tag.appendChild(pin_link_tag);
-        pin_list_tag.appendChild(pin_item_tag);
+        const item = document.createElement('li');
+        const link = document.createElement('a');
+        link.href = "https://dweb.link/ipfs/" + cid.toString();
+        link.innerText = cid.toString();
+        item.appendChild(link);
+        pin_list.appendChild(item);
     }
-    document.body.appendChild(pin_list_tag);
+    document.body.appendChild(pin_list);
 }
 
 initialize();