Fix the issues reported by phpcs

Problem/Motivation

Getting following warning.

FILE: /var/www/html/modules/contrib/twig_typography/twig_typography_test/twig_typography_test.routing.yml
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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6 | WARNING | Open page callback found, please add a comment before the line why there is no access restriction
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Time: 1.85 secs; Memory: 6MB

Steps to reproduce

Run following command

phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml modules/contrib/twig_typography/

Proposed resolution

Above warning need to be fixed.