docs: update Markdown stdlib package URLs

PR-URL: 	#1146
Reviewed-by: Athan Reines <kgryte@gmail.com>
Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

Author: stdlib-bot

lib/node_modules/@stdlib/array/base/take3d/README.md

@@ -121,7 +121,7 @@ console.log( y );
 
 <section class="links">
 
-[@stdlib/ndarray/index-modes]: https://github.com/stdlib-js/stdlib
+[@stdlib/ndarray/index-modes]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/ndarray/index-modes
 
 </section>