Tutorial: `cert-manager` on Google Kubernetes Engine - Remove Google Domains

[sethmccombs]

The Deploy cert-manager on Google Kubernetes Engine (GKE) and create SSL certificates for Ingress using Let's Encrypt
tutorial still references "Google Domains" which was shuttered in July 2024

I'm not sure how often tutorials are updated, but figured I'd open an issue since the Last Verified date on this tutorial was 6 June 2025 - which is semi-recent

I'm totally willing to open a PR to update this with a different registrar if desired, but figured I'd open an issue before hand to see

• if this was something we wanted to update
• what domain registrar would be best, Cloudflare maybe? - there's already a link to the "What is a DNS Record" portion of cloudflare's docs, and GoDaddy and Namecheap are also mentioned

Looking at the tutorial, it looks like the solver is http01 so maybe the fix is just to modify that section to mention acquiring a domain name, with no specific steps on purchasing?

Let me know! Happy to take this on!

[sethmccombs]

Ended up starting a branch to generalize the tutorial (removing the domain purchase specifics) - will change if discussion here heads the other direction (that we want to specify a registrar)