azurerm_mssql_elasticpool - allow PRMS for family (#27615)

* azurerm_mssql_elasticpool - allow PRMS for family

* docs:

Author: katbyte

internal/services/mssql/mssql_elasticpool_resource.go

@@ -123,6 +123,7 @@ func resourceMsSqlElasticPool() *pluginsdk.Resource {
 								"Fsv2",
 								"DC",
 								"MOPRMS",
+								"PRMS",
 							}, false),
 						},
 					},

website/docs/r/mssql_elasticpool.html.markdown

@@ -97,7 +97,7 @@ The `sku` block supports the following:
 
 * `tier` - (Required) The tier of the particular SKU. Possible values are `GeneralPurpose`, `BusinessCritical`, `Basic`, `Standard`, `Premium`, or `HyperScale`. For more information see the documentation for your Elasticpool configuration: [vCore-based](https://docs.microsoft.com/azure/sql-database/sql-database-vcore-resource-limits-elastic-pools) or [DTU-based](https://docs.microsoft.com/azure/sql-database/sql-database-dtu-resource-limits-elastic-pools).
 
-* `family` - (Optional) The `family` of hardware `Gen4`, `Gen5`, `Fsv2`, `MOPRMS`, or `DC`.
+* `family` - (Optional) The `family` of hardware `Gen4`, `Gen5`, `Fsv2`, `MOPRMS`, `PRMS`, or `DC`.
 
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