docs: Update variable description (#496)

* docs: Update variable description

https://aws.amazon.com/about-aws/whats-new/2024/09/amazon-rds-performance-insights-supports-aurora-cluster-level-configuration/

* Update README.md

Author: velkovb

README.md

@@ -290,9 +290,9 @@ No modules.
 | <a name="input_cluster_ca_cert_identifier"></a> [cluster\_ca\_cert\_identifier](#input\_cluster\_ca\_cert\_identifier) | The CA certificate identifier to use for the DB cluster's server certificate. Currently only supported for multi-az DB clusters | `string` | `null` | no |
 | <a name="input_cluster_members"></a> [cluster\_members](#input\_cluster\_members) | List of RDS Instances that are a part of this cluster | `list(string)` | `null` | no |
 | <a name="input_cluster_monitoring_interval"></a> [cluster\_monitoring\_interval](#input\_cluster\_monitoring\_interval) | Interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB cluster. To turn off collecting Enhanced Monitoring metrics, specify 0. Valid Values: 0, 1, 5, 10, 15, 30, 60 | `number` | `0` | no |
-| <a name="input_cluster_performance_insights_enabled"></a> [cluster\_performance\_insights\_enabled](#input\_cluster\_performance\_insights\_enabled) | Valid only for Non-Aurora Multi-AZ DB Clusters. Enables Performance Insights for the RDS Cluster | `bool` | `null` | no |
-| <a name="input_cluster_performance_insights_kms_key_id"></a> [cluster\_performance\_insights\_kms\_key\_id](#input\_cluster\_performance\_insights\_kms\_key\_id) | Valid only for Non-Aurora Multi-AZ DB Clusters. Specifies the KMS Key ID to encrypt Performance Insights data. If not specified, the default RDS KMS key will be used (aws/rds) | `string` | `null` | no |
-| <a name="input_cluster_performance_insights_retention_period"></a> [cluster\_performance\_insights\_retention\_period](#input\_cluster\_performance\_insights\_retention\_period) | Valid only for Non-Aurora Multi-AZ DB Clusters. Specifies the amount of time to retain performance insights data for. Defaults to 7 days if Performance Insights are enabled. Valid values are 7, month * 31 (where month is a number of months from 1-23), and 731 | `number` | `null` | no |
+| <a name="input_cluster_performance_insights_enabled"></a> [cluster\_performance\_insights\_enabled](#input\_cluster\_performance\_insights\_enabled) | Enables Performance Insights for the RDS Cluster | `bool` | `null` | no |
+| <a name="input_cluster_performance_insights_kms_key_id"></a> [cluster\_performance\_insights\_kms\_key\_id](#input\_cluster\_performance\_insights\_kms\_key\_id) | Specifies the KMS Key ID to encrypt Performance Insights data. If not specified, the default RDS KMS key will be used (aws/rds) | `string` | `null` | no |
+| <a name="input_cluster_performance_insights_retention_period"></a> [cluster\_performance\_insights\_retention\_period](#input\_cluster\_performance\_insights\_retention\_period) | Specifies the amount of time to retain performance insights data for. Defaults to 7 days if Performance Insights are enabled. Valid values are 7, month * 31 (where month is a number of months from 1-23), and 731 | `number` | `null` | no |
 | <a name="input_cluster_scalability_type"></a> [cluster\_scalability\_type](#input\_cluster\_scalability\_type) | Specifies the scalability mode of the Aurora DB cluster. When set to limitless, the cluster operates as an Aurora Limitless Database. When set to standard (the default), the cluster uses normal DB instance creation. Valid values: limitless, standard | `string` | `null` | no |
 | <a name="input_cluster_tags"></a> [cluster\_tags](#input\_cluster\_tags) | A map of tags to add to only the cluster. Used for AWS Instance Scheduler tagging | `map(string)` | `{}` | no |
 | <a name="input_cluster_timeouts"></a> [cluster\_timeouts](#input\_cluster\_timeouts) | Create, update, and delete timeout configurations for the cluster | `map(string)` | `{}` | no |

variables.tf

@@ -109,19 +109,19 @@ variable "cluster_scalability_type" {
 }
 
 variable "cluster_performance_insights_enabled" {
-  description = "Valid only for Non-Aurora Multi-AZ DB Clusters. Enables Performance Insights for the RDS Cluster"
+  description = "Enables Performance Insights for the RDS Cluster"
   type        = bool
   default     = null
 }
 
 variable "cluster_performance_insights_kms_key_id" {
-  description = "Valid only for Non-Aurora Multi-AZ DB Clusters. Specifies the KMS Key ID to encrypt Performance Insights data. If not specified, the default RDS KMS key will be used (aws/rds)"
+  description = "Specifies the KMS Key ID to encrypt Performance Insights data. If not specified, the default RDS KMS key will be used (aws/rds)"
   type        = string
   default     = null
 }
 
 variable "cluster_performance_insights_retention_period" {
-  description = "Valid only for Non-Aurora Multi-AZ DB Clusters. Specifies the amount of time to retain performance insights data for. Defaults to 7 days if Performance Insights are enabled. Valid values are 7, month * 31 (where month is a number of months from 1-23), and 731"
+  description = "Specifies the amount of time to retain performance insights data for. Defaults to 7 days if Performance Insights are enabled. Valid values are 7, month * 31 (where month is a number of months from 1-23), and 731"
   type        = number
   default     = null
 }