Add PCI DSS for AWS to prewritten policy lib ref (#1354)

This PR adds PCI DSS for AWS to the prewritten policy library reference
per IPE-1293. There are no other updates to the policy enforcement
documentation.

The new policies are scheduled for release on 11/27. Do not merge until
then.

Author: trujillo-adam

content/terraform-docs-common/docs/cloud-docs/workspaces/policy-enforcement/prewritten-library.mdx

@@ -1,6 +1,6 @@
 ---
 page_title: Pre-written policy library
-description: HashiCorp authors and maintains a library of pre-written Sentinel policies that enforce CIS and other compliance standards. Learn about the available pre-written policies. 
+description: Learn about HashiCorp's pre-written Sentinel policies for CIS, FSBP, PCI DSS, and NIST SP 800-53 Revision 5.  
 ---
 
 # Pre-written policy library reference
@@ -29,7 +29,13 @@ The Foundational Security Best Practices (FSBP) standard enforces security best
 
 - AWS Foundational Security Best Practices v1.0.0. Refer to the [AWS documentation](https://docs.aws.amazon.com/securityhub/latest/userguide/fsbp-standard.html) for additional information.
 
-Refer to the [AWS FSBP policy set repository](https://github.com/hashicorp/policy-library-FSBP-Policy-Set-for-AWS-Terraform/) for details about these policies. 
+Refer to the [AWS FSBP policy set repository](https://github.com/hashicorp/policy-library-FSBP-Policy-Set-for-AWS-Terraform/) for details about these policies.
+
+### PCI DSS
+
+The Payment Card Industry Data Security Standard (PCI DSS) is set of rules for protecting payment data throughout the data's lifecycle. Compliance with PCI DSS is mandatory for organizations that handle credit card information. Refer to the [PCI DSS website](https://www.pcisecuritystandards.org/standards/) for more information about the standard.
+
+Refer to the [PCI DSS policy set reposity](https://github.com/hashicorp/policy-library-pcidss-policy-set-for-aws-terraform) for details about the policies HashiCorp publishes and maintains. 
 
 ### NIST SP 800-53 Revision 5