esm: add JSDoc property descriptions for fetch

PR-URL: #45370
Reviewed-By: Akhil Marsonya <akhil.marsonya27@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Jacob Smith <jacob@frende.me>

Author: Trott

lib/internal/modules/esm/fetch_module.js

@@ -21,9 +21,9 @@ const { once } = require('events');
 const { compose } = require('stream');
 /**
  * @typedef CacheEntry
- * @property {Promise<string> | string} resolvedHREF
- * @property {Record<string, string>} headers
- * @property {Promise<Buffer> | Buffer} body
+ * @property {Promise<string> | string} resolvedHREF Parsed HREF of the request.
+ * @property {Record<string, string>} headers HTTP headers of the response.
+ * @property {Promise<Buffer> | Buffer} body Response body.
  */
 
 /**