Update .github/copilot-instructions.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: aclark4life

.github/copilot-instructions.md

@@ -3,6 +3,6 @@ Follow these rules in this repo (summary). Full details: see [AGENTS.md](../AGEN
 - Security: never introduce hardcoded secrets; avoid injection/dynamic execution hazards.
 - Performance: watch for inefficient loops and resource leaks; clean up resources.
 - Docs/API: public classes/modules/methods must have Sphinx docs.
-- PyMongo synchro rule: do not edit `pymongo/synchronous` (or sync test twins) unless the change includes `_IS_SYNC`; those files are generated via `tools/synchro.py`.
+- PyMongo synchro rule: do not review changes in `pymongo/synchronous` or in `test/` files that have same-named files in `test/asynchronous` unless the change includes `_IS_SYNC`; those files are generated via `tools/synchro.py`.
 - Async: async functions must not call blocking I/O.
 - Review style: be specific/actionable; explain “why”; ask clarifying questions when unclear.