Update troubleshooting-cloudflare-1xxx-errors.mdx

Replacing obsolete link.

Author: nenizera

src/content/docs/support/troubleshooting/cloudflare-errors/troubleshooting-cloudflare-1xxx-errors.mdx

@@ -16,7 +16,7 @@ The errors described in this document might occur when visiting a website proxie
 :::note
 
 Cloudflare **[Custom Error
-Pages](https://support.cloudflare.com/hc/articles/200172706)** allows
+Pages](/support/more-dashboard-apps/cloudflare-custom-pages/configuring-custom-pages-error-and-challenge/)** allows
 customers to change the appearance of the default error pages discussed
 in this article.
 :::