Fix incorrect member name in protocol tests' body

Author: joewyz

smithy-aws-protocol-tests/model/awsJson1_0/query-compatible.smithy

@@ -60,7 +60,7 @@ apply NoCustomCodeError @httpResponseTests([
         body: """
             {
                 "__type": "aws.protocoltests.json10#NoCustomCodeError",
-                "Message": "Hi"
+                "message": "Hi"
             }"""
         bodyMediaType: "application/json"
         vendorParamsShape: ErrorCodeParams
@@ -85,7 +85,7 @@ apply CustomCodeError @httpResponseTests([
         body: """
             {
                 "__type": "aws.protocoltests.json10#CustomCodeError",
-                "Message": "Hi"
+                "message": "Hi"
             }"""
         bodyMediaType: "application/json"
         vendorParamsShape: ErrorCodeParams

smithy-aws-protocol-tests/model/rpcv2Cbor/query-compatible.smithy

@@ -59,7 +59,7 @@ apply NoCustomCodeError @httpResponseTests([
         params: { message: "Hi" }
         code: 400
         headers: { "smithy-protocol": "rpc-v2-cbor", "Content-Type": "application/cbor" }
-        body: "uQACZl9fdHlwZXgtYXdzLnByb3RvY29sdGVzdHMucnBjdjJjYm9yI05vQ3VzdG9tQ29kZUVycm9yZ01lc3NhZ2ViSGk="
+        body: "uQACZl9fdHlwZXgtYXdzLnByb3RvY29sdGVzdHMucnBjdjJjYm9yI05vQ3VzdG9tQ29kZUVycm9yZ21lc3NhZ2ViSGk="
         bodyMediaType: "application/cbor"
         vendorParamsShape: ErrorCodeParams
         vendorParams: { code: "NoCustomCodeError" }
@@ -80,7 +80,7 @@ apply CustomCodeError @httpResponseTests([
         params: { message: "Hi" }
         code: 400
         headers: { "smithy-protocol": "rpc-v2-cbor", "Content-Type": "application/cbor", "x-amzn-query-error": "Customized;Sender" }
-        body: "uQACZl9fdHlwZXgrYXdzLnByb3RvY29sdGVzdHMucnBjdjJjYm9yI0N1c3RvbUNvZGVFcnJvcmdNZXNzYWdlYkhp"
+        body: "uQACZl9fdHlwZXgrYXdzLnByb3RvY29sdGVzdHMucnBjdjJjYm9yI0N1c3RvbUNvZGVFcnJvcmdtZXNzYWdlYkhp"
         bodyMediaType: "application/cbor"
         vendorParamsShape: ErrorCodeParams
         vendorParams: { code: "Customized", type: "Sender" }