Added redirect to Fundamentals (#20090)

Added missing redirect for Interacting with Cloudflare page

Author: dcpena

public/_redirects

@@ -624,6 +624,7 @@
 /fundamentals/basic-tasks/trace-request/how-to/ /fundamentals/trace-request/how-to/ 301
 /fundamentals/basic-tasks/trace-request/limitations/ /fundamentals/trace-request/limitations/ 301
 /fundamentals/basic-tasks/trace-request/changelog/ /fundamentals/trace-request/changelog/ 301
+/fundamentals/basic-tasks/interact-with-cloudflare/ /fundamentals/setup/interact-with-cloudflare/ 301
 /fundamentals/security/trace-request/ /fundamentals/trace-request/ 301
 /fundamentals/security/trace-request/how-to/ /fundamentals/trace-request/how-to/ 301
 /fundamentals/security/trace-request/limitations/ /fundamentals/trace-request/limitations/ 301