images are sometimes attached from the drive, and other times from github

[wisammechano]

we need to unify image attachments and preferably upload them to canvas course files upon deployment. Then attach the images from within Canvas for containment

Example: https://github.com/ReCoded-Org/curriculum-backend-readings/blob/ec29f4f422ad19f7729ff304ebc2d156d366d2a9/module1-introduction-to-backend/r1-introduction-to-backend/README.md#L20