fixed parameter name

Author: Justin

aws_sra_examples/solutions/securityhub/securityhub_org/customizations_for_aws_control_tower/manifest-v2.yaml

@@ -27,7 +27,7 @@ resources:
         parameter_value: ''
       - parameter_key: pEnablePCIStandard
         parameter_value: 'false'
-      - parameter_key: pEnableNISTtandard
+      - parameter_key: pEnableNISTStandard
         parameter_value: 'false'
       - parameter_key: pEnableSecurityBestPracticesStandard
         parameter_value: 'true'