[11.x] fix: Update text email template

[tranvanhieu01012002]

This PR is used to have a good way for multiple languages in email.

I know that all sentences include: punctuation

  return (new MailMessage)
            ->subject(Lang::get('Verify Email Address'))
            ->line(Lang::get('Please click the button below to verify your email address.'))
            ->action(Lang::get('Verify Email Address'), $url)
            ->line(Lang::get('If you did not create an account, no further action is required.'));

So I tried with: "Regards," and it doesn't work.
--> I need to search alot to find the issue -> the email template is: @lang('Regards')
--> I created this PR to hope other developers don't lose time to customizing the language for their emails and Consistency

@lang('Thanks,') not @lang('Thanks'),