Update copilot-instructions.md

- update AI agent signature

Author: ar-ibrahim

.github/copilot-instructions.md

@@ -85,13 +85,13 @@ This includes instructions for editing the OBA ontology.
 - Always commit in a branch, e.g. issue-NNN
 - If there is an existing PR which you started then checkout that branch and continue, rather than starting a new PR (unless you explicitly want to abandon the original PR, e.g. it was on completely the wrong tracks)
 - Always make clear detailed commit messages, saying what you did and why
-- Always sign your commits `@dragon-ai-agent`
+- Always sign your commits `@AI agent`
 - Create PRs using `gh pr create ...`
 - File PRs with clear descriptions, and sign your PR
 
 ## Handling GitHub issues and requests
 - Use `gh` to read and write issues/PRs
-- Sign all commits and PRs as `@dragon-ai-agent`
+- Sign all commits and PRs as `@AI agent`
 
 ## TROUBLESHOOTING
 - If your obo file has syntax errors, you can use `robot convert -vvv` to see full trace
@@ -110,7 +110,7 @@ This includes instructions for editing the OBA ontology.
 
 - Link back to the issue you are dealing with using the `term_tracker_item`
 - All terms should have definitions, with at least one definition xref, ideally a PMID
-- You can sign terms as `created_by: dragon-ai-agent`
+- You can sign terms as `created_by: AI agent`
 
 ## Relationships