[troubleshooting] add 2 points of reference to the offline mode (#11236)
* add 2 points of reference to the offline mode
* link the new doc
* add error message
* Update src/transformers/modeling_utils.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* style
* rename
* Trigger CI
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>