Fix incorrect links on Resources page

[decirella]

https://bitcurator.github.io/documentation/Resources/

Hyperlinks for the following items exist and return 404 errors

https://bitcurator.github.io/documentation/Resources/attachments/DigitalPreservatonToolsFileset.zip
https://bitcurator.github.io/documentation/Resources/attachments/kagan-emails.zip
https://bitcurator.github.io/documentation/Resources/attachments/kagan-dpc-org-chart.pdf
https://bitcurator.github.io/documentation/Resources/attachments/kagan-office-council-staff-list.pdf
https://bitcurator.github.io/documentation/Resources/attachments/enron-org-charts.pdf
https://bitcurator.github.io/documentation/Resources/attachments/lsa-it-dept-organization.pdf

[decirella]

The linked files weren't transferred during the migration from confluence. It looks like they are located in the site export, renamed, in the drive