Update Terraform code snippets for SDK 5

[vinayak-commit]

Existing documentation URL(s)

https://developers.cloudflare.com/terraform/additional-configurations/waf-managed-rulesets/

What changes are you suggesting?

https://developers.cloudflare.com/terraform/additional-configurations/waf-managed-rulesets/

Update this for v5
The public information for it on Cloudflare and Terraform is very limited.
We want Cloudflare to maintain good documentation for the same.

Additional information

No response

[jhutchings1]

👋🏻 Hi @vinayak-commit thank you for flagging this. We're aware of the shortcomings in the public docs around Terraform v5. Unfortunately, the v5 provider has been facing difficulty with stabilization, and we have delayed our docs updates for it until we get it to a more stable place. You can follow the issues in https://github.com/cloudflare/terraform-provider-cloudflare/