docs: update related packages sections

PR-URL: stdlib-js#4770
Reviewed-by: Athan Reines <[email protected]>

lib/node_modules/@stdlib/constants/float32/phi/README.md

@@ -141,6 +141,12 @@ Macro for the [golden ratio][phi-value].
 
 <section class="related">
 
+* * *
+
+## See Also
+
+-   <span class="package-name">[`@stdlib/constants/float64/phi`][@stdlib/constants/float64/phi]</span><span class="delimiter">: </span><span class="description">golden ratio.</span>
+
 </section>
 
 <!-- /.related -->
@@ -153,6 +159,12 @@ Macro for the [golden ratio][phi-value].
 
 [phi-value]: http://oeis.org/A001622
 
+<!-- <related-links> -->
+
+[@stdlib/constants/float64/phi]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/constants/float64/phi
+
+<!-- </related-links> -->
+
 </section>
 
 <!-- /.links -->