Docs: Terraform prereq clarification (#24069)

Clarify Terraform prereq since you don't need to install the Terraform CLI locally.

Fixes: [CE-726](https://hashicorp.atlassian.net/browse/CE-726)

[CE-726]: https://hashicorp.atlassian.net/browse/CE-726?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

website/content/docs/operations/aws-oidc-provider.mdx

@@ -25,8 +25,7 @@ The instructions on this page also assume the following:
 
 - Your AWS account has the necessary permissions to create IAM roles, policies, hosted zones,
   and certificates.
-- Terraform is installed locally and 
-  [configured to communicate with AWS](https://registry.terraform.io/providers/hashicorp/aws/latest/docs#authentication-and-configuration).
+- You are using Terraform to manage your AWS infrastructure.
 
 ## Workflow
 
@@ -400,4 +399,4 @@ Verify that the file was also uploaded to the S3 bucket.
 
 
 [Workload Identity]: /nomad/docs/concepts/workload-identity
-[OpenID Connect Provider]: https://openid.net/developers/how-connect-works/
+[OpenID Connect Provider]: https://openid.net/developers/how-connect-works/