How do I link content information in a thank-you email?

Yes, it is possible.
Since you can call Kuroco's API from the thank-you email, refer to Can I call Kuroco's API using custom function? to retrieve content information.

Example Code

Thank you for your inquiry.
Please check Kuroco's service materials below.
{assign_array var='method_params'            values=''}
{assign       var='method_params.topics_id'  value='98'}
{api_method
    var='topics'
    model='Topics'
    method='details'
    version='1'
    method_params=$method_params
}
Kuroco Service Materials:{$topics.details.ext_14.url}

More information

For more information on customizing e-mail notifications, see:

• FAQ: Can I customize my thank-you e-mails?
• FAQ: How do I include content from the original form submission in the thank-you e-mail?
• FAQ: How do I include user details in the thank-you e-mail?
• FAQ: How do I display inquiry numbers in thank-you e-mails and notifications?
• FAQ: Can I modify the content of the notification e-mail for each form?
• Reference: List of available variables in the Message template
• FAQ: Can I change the recipient email address based on the options selected in the form items?