r/private_endpoint: fixing the casing on `private_connection_resource…

…_id` if needed

internal/services/network/private_endpoint_resource.go

@@ -7,6 +7,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/hashicorp/terraform-provider-azurerm/internal/services/signalr/sdk/2020-05-01/signalr"
+
 	"github.com/Azure/azure-sdk-for-go/services/network/mgmt/2021-02-01/network"
 	"github.com/hashicorp/go-azure-helpers/lang/response"
 	"github.com/hashicorp/terraform-provider-azurerm/helpers/azure"
@@ -623,6 +625,11 @@ func flattenPrivateLinkEndpointServiceConnection(serviceConnections *[]network.P
 						privateConnectionId = serverId.ID()
 					}
 				}
+				if strings.Contains(strings.ToLower(privateConnectionId), "microsoft.signalrservice") {
+					if serviceId, err := signalr.ParseSignalRIDInsensitively(privateConnectionId); err == nil {
+						privateConnectionId = serviceId.ID()
+					}
+				}
 				attrs["private_connection_resource_id"] = privateConnectionId
 			}