"Schematic view of how things are done" link in the documentation is dead

[gustavi]

Doc URL: https://sorl-thumbnail.readthedocs.io/en/latest/operation.html

Targeted URL: https://docs.google.com/drawings/edit?id=1wlE4LkQpzXd2a2Nxfjt6_j5NG7889dzMyf0V-xPAJSE&hl=en

Error:

[claudep]

@sorl, this was done a long time ago, but do you still have sources for this document?