Removes pre-release cluster peering warning from documentation

[nickwales]

The cluster peering feature is no longer in pre-release.

[nathancoleman]

Cluster Peering GA was announced in Consul 1.14

[nathancoleman]

@nickwales the docs are generated, so I believe you'll need to remove the source of this warning here

terraform-provider-consul/consul/resource_consul_peering.go

Lines 21 to 22 in 21e1542

	~> **Cluster peering is currently in technical preview:** Functionality associated with cluster peering is subject to change. You should never use the technical preview release in secure environments or production scenarios. Features in technical preview may have performance issues, scaling issues, and limited support.

and then regenerate the docs just to make sure everything is clean. Not any docs that I could find for this process, but you'll need to do the same thing the CI does here:

terraform-provider-consul/.github/workflows/test.yaml

Lines 47 to 50 in 45a6e54

	- name: Generate the documentation'
	run: |
	terraform fmt -recursive .
	tfplugindocs generate --ignore-deprecated true