website: add links to the registry provider documentation (#27416)
website: add links to the registry provider documentation (#27416)

* docs: add links to the registry provider documentation

* Adjust wording/link URL

Co-authored-by: Nick Fagerlund <75ef9faee755c70589550b513ad881e5a603182c@hashicorp.com>
ewbankkit/terraform,rnaveiras/terraform,apparentlymart/terraform,apparentlymart/terraform,rnaveiras/terraform,rnaveiras/terraform,apparentlymart/terraform,tommynsong/terraform,apparentlymart/terraform,hashicorp/terraform,hashicorp/terraform,ewbankkit/terraform,ewbankkit/terraform,ewbankkit/terraform,tommynsong/terraform,tommynsong/terraform,hashicorp/terraform,apparentlymart/terraform