fix(codegen): s3 endpoint parameter useArnRegion bound to wrong config property (#1102)

Author: aajtodd

.changes/34157ab1-1bd3-4ac8-9845-661c4709475b.json

@@ -0,0 +1,8 @@
+{
+    "id": "34157ab1-1bd3-4ac8-9845-661c4709475b",
+    "type": "bugfix",
+    "description": "Fix endpoint builtin bound to wrong config parameter",
+    "issues": [
+        "awslabs/aws-sdk-kotlin#1101"
+    ]
+}

codegen/smithy-aws-kotlin-codegen/src/main/kotlin/aws/sdk/kotlin/codegen/protocols/endpoints/BindAwsEndpointBuiltins.kt

@@ -53,7 +53,7 @@ fun renderBindAwsBuiltins(ctx: ProtocolGenerator.GenerationContext, writer: Kotl
                 "AWS::S3::Accelerate" -> renderBasicConfigBinding(writer, it, S3ClientConfigIntegration.EnableAccelerateProp.propertyName)
                 "AWS::S3::ForcePathStyle" -> renderBasicConfigBinding(writer, it, S3ClientConfigIntegration.ForcePathStyleProp.propertyName)
                 "AWS::S3::DisableMultiRegionAccessPoints" -> renderBasicConfigBinding(writer, it, S3ClientConfigIntegration.DisableMrapProp.propertyName)
-                "AWS::S3::UseArnRegion" -> renderBasicConfigBinding(writer, it, S3ClientConfigIntegration.DisableMrapProp.propertyName)
+                "AWS::S3::UseArnRegion" -> renderBasicConfigBinding(writer, it, S3ClientConfigIntegration.UseArnRegionProp.propertyName)
                 "AWS::S3Control::UseArnRegion" -> renderBasicConfigBinding(writer, it, S3ControlClientConfigIntegration.UseArnRegionProp.propertyName)
 
                 "SDK::Endpoint" ->