docs(aws-cognito): Docstring naming for userpool interface property (#19376)

# Summary

Fix the incorrect property name for the **MfaSecondFactor** interface on the UserPool Class doc-strings.

>Fixes the below issue
#19375 
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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: Dean Foran

packages/@aws-cdk/aws-cognito/lib/user-pool.ts

@@ -585,8 +585,8 @@ export interface UserPoolProps {
   /**
    * Configure the MFA types that users can use in this user pool. Ignored if `mfa` is set to `OFF`.
    *
-   * @default - { sms: true, oneTimePassword: false }, if `mfa` is set to `OPTIONAL` or `REQUIRED`.
-   * { sms: false, oneTimePassword: false }, otherwise
+   * @default - { sms: true, otp: false }, if `mfa` is set to `OPTIONAL` or `REQUIRED`.
+   * { sms: false, otp: false }, otherwise
    */
   readonly mfaSecondFactor?: MfaSecondFactor;