Update community-best-practices-for-app-performance.md

Added deleting in a list after a loop.

Author: dominiquemunten

content/en/docs/refguide/modeling/community-best-practices-for-app-performance.md

@@ -60,8 +60,9 @@ Indexes is a topic with a long history of best practices from the database world
 ## 4 Microflow Best Practices {#microflow-community-best-practices}
 
 * Minimize the work in loops:
-    * Do commits after the loop in a list commit. 
-    * If needed, create a list named `<Entity>_CommitList` before the loop and collect the items to be committed there.
+    * Do commits and deletes after the loop in a list commit. 
+    * If needed, create a list named `<Entity>_CommitList` before the loop and collect the items to be committed there. 
+      Same for deletes with a `<Entity>_DeleteList`.
     * For retrieves in a loop, consider retrieving all the data before the loop, and do finds on that list inside the loop.
     * If loops contain decisions, consider if the decision logic can be a query before the loop to minimize iterations.
 * Prevent unnecessary retrieves if objects or lists can be passed as parameters.