fixup! minor doc updates

edx_arch_experiments/datadog_monitoring/docs/how_tos/add_code_owner_custom_attribute_to_an_ida.rst

@@ -26,13 +26,15 @@ If you want to learn more about custom span tags in general, see `Enhanced Monit
 Setting up the Middleware
 -------------------------
 
-You simply need to add ``edx_arch_experiments/datadog_monitoring/code_owner/middleware.CodeOwnerMonitoringMiddleware`` to get code owner span tags on Django requests.
+You simply need to add ``edx_arch_experiments.datadog_monitoring.code_owner.middleware.CodeOwnerMonitoringMiddleware`` to get code owner span tags on Django requests.
 
 Handling celery tasks
 ---------------------
 
 For celery tasks, this plugin will automatically detect and add code owner span tags to any span with ``operation_name:celery.run``.
 
+This is accomplished by receiving signals from celery's worker_process_init for each process, and then adding a custom Datadog span processor to add the span tags as appropriate.
+
 Configuring your app settings
 -----------------------------