feat: update contentkit subdomain based on maintainer notes

Author: builtbyjonas

cnames_active.js

@@ -606,7 +606,7 @@ var cnames_active = {
   "consono": "r37r0m0d3l.github.io/consono",
   "construyendotrabajo": "mteyss.github.io/construyendotrabajo", // noCF? (don´t add this in a new PR)
   "consultant": "jense5.github.io/consultant",
-  "contentkit": "apex-loadbalancer.netlify.com", // noCF? (don´t add this in a new PR)
+  "contentkit": "contentkit-docs.netlify.app", // noCF
   "contex": "donnellan0007.github.io/ContextJS",
   "context": "theinternetfolks.github.io/context",
   "contextify": "abemedia.github.io/jquery-contextify", // noCF? (don´t add this in a new PR)