Fix PHPCS after #3379701

Problem/Motivation

After fixing #3379701 there are 2 coding standards issues found:

FILE: .../web/modules/contrib/phone_number/modules/sms_phone_number/src/Element/SmsPhoneNumber.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 30 | ERROR | Long array syntax must not be used in doc comment code annotations
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FILE: .../web/modules/contrib/phone_number/src/Element/PhoneNumber.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 27 | ERROR | Long array syntax must not be used in doc comment code annotations
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Steps to reproduce

Run phpcs

Proposed resolution

Fix the issues.

Remaining tasks

Provide fix.

User interface changes

-

API changes

-

Data model changes

-