Fix the issues reported by phpcs

Above errors has been fixed.

Hi samit.310@gmail.com,

I applied your patch #2 to the "Go Back History" module against version 8.x-1.x-dev, and verified that the PHPCS issues were resolved.

Please look at the screenshot attached for your reference.

Thank you.

Thanks @samit.310@gmail.com for your patch.
Thanks @clarkssquared for the check.
I committed the patch in the dev version.

Automatically closed - issue fixed for 2 weeks with no activity.