Feature flag `useEnabledMfas`'s default value for new projects is wrong

[choyky]

Describe the content issue:
In below document, the default value for new projects for feature flag useEnabledMfas is marked as false, but in fact it should be true.

URL page where content issue is:
https://docs.amplify.aws/javascript/tools/cli/reference/feature-flags/#useEnabledMfas

Ref.
https://github.com/aws-amplify/amplify-cli/blob/dev/packages/amplify-cli-core/src/feature-flags/featureFlags.ts#L714

      {
        name: 'useEnabledMfas',
        type: 'boolean',
        defaultValueForExistingProjects: false,
        defaultValueForNewProjects: true,
      }