Added clefourrier as ref point for graph models in bug reports
# What does this PR do?
Added myself as entry point for graph models in issue doc.
_The documentation is not available anymore as the PR was closed or merged._<|||||>Also, I missed this file
```
.github/PULL_REQUEST_TEMPLATE.md
```
if you think it is relevant.<|||||>Add @sgugger for final review as I never changed these files before, and this is also more administrative decision :-)<|||||>Did not see the comment section in PULL_REQUEST_TEMPLATE when I opened them in browser view - edited!

Edit: However, not sure what I could add to `feature-request`?<|||||>> Did not see the comment section in PULL_REQUEST_TEMPLATE when I opened them in browser view - edited!
> 
> Edit: However, not sure what I could add to `feature-request`?

My bad, my brain is not completely recovered from all the `drink` I had last week.