docs: re-add link definition

Author: Planeshifter

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

@@ -128,6 +128,8 @@ Macro for the square root of the [golden ratio][@stdlib/constants/float32/phi] a
 
 <section class="links">
 
+[@stdlib/constants/float32/phi]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/constants/float32/phi
+
 <!-- <related-links> -->
 
 <!-- </related-links> -->