Export Space to HTML footer contains reference to originating site and not the export

Steps To Reproduce

1. Create a new space 'Export Test'
2. Export the space to HTML in the 'advanced' section of the space admin screens
3. Open 'Export+Test+Home.html' in export
4. Open the developer tools and notice that the URL of the originating site is still in use. For example, please see the attached image which shows this in Chrome.

The HTML export of the space should be a standalone replication of the space and not contain references to the originating site.