docs: fix broken Markdown link

PR-URL: #9156
Closes: #9126

Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

Author: manit2004

lib/node_modules/@stdlib/assert/has-is-concat-spreadable-symbol-support/README.md

@@ -122,7 +122,7 @@ $ has-is-concat-spreadable-symbol-support
 
 <section class="links">
 
-[mdn-is-concat-spreadable-symbol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol.isConcatSpreadable
+[mdn-is-concat-spreadable-symbol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/isConcatSpreadable
 
 </section>