docs: fix broken Markdown link

PR-URL: #9208
Ref: #9147

Co-authored-by: Philipp Burckhardt <pburckhardt@outlook.com>
Co-authored-by: stdlib-bot <noreply@stdlib.io>
Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>
Signed-off-by: Almunazza <munazzaghazali7@gmail.com>
Signed-off-by: Philipp Burckhardt <pburckhardt@outlook.com>

Author: 3 people

docs/style-guides/javascript/README.md

@@ -3651,7 +3651,7 @@ This document may be reused under a [Creative Commons Attribution-ShareAlike Lic
 
 [idiomatic-js]: https://github.com/rwaldron/idiomatic.js/
 
-[popular-convention]: http://sideeffect.kr/popularconvention/#javascript
+[popular-convention]: https://web.archive.org/web/20150701000000/http://sideeffect.kr/popularconvention/#javascript
 
 [quality-guide]: https://github.com/bevacqua/js