Update OATS EFCore assertion

Update attribute name.

Author: martincostello

docker/docker-compose-aspnetcore/oats.yaml

@@ -79,5 +79,5 @@ expected:
           attributes:
             db.system: sqlite
             db.name: main
-            peer.service: /app/App_Data/TodoApp.db
+            server.address: /app/App_Data/TodoApp.db
             otel.library.name: OpenTelemetry.Instrumentation.EntityFrameworkCore