Add Terraform Cloud provider requirements (#25991)

website/docs/registry/providers/os-arch.html.md

@@ -11,7 +11,7 @@ description: |-
 We recommend the following operating system / architecture combinations for compiled binaries available in the registry (this list is already satisfied by our [recommended **.goreleaser.yml** configuration file](https://github.com/hashicorp/terraform-provider-scaffolding/blob/master/.goreleaser.yml)):
 
 * Darwin / AMD64
-* Linux / AMD64
+* Linux / AMD64 (this is **required** for usage in Terraform Cloud, see below)
 * Linux / ARMv8 (sometimes referred to as AArch64 or ARM64)
 * Linux / ARMv6
 * Windows / AMD64
@@ -22,3 +22,7 @@ We also recommend shipping binaries for the following combinations, but we typic
 * Windows / 386
 * FreeBSD / 386
 * FreeBSD / AMD64
+
+## Terraform Cloud Compatibility
+
+To ensure your provider can run in Terraform Cloud, please include a Linux / AMD64 binary. This binary should also not have CGO enabled and should not depend on command line execution of any external tools or binaries. We cannot guaruntee availibility of any package/library/binary within the Terraform Cloud images.