Update traffic-analytics-faq.yml

adding from escalation on ava

Author: earthkid123

articles/network-watcher/traffic-analytics-faq.yml

@@ -70,6 +70,11 @@ sections:
         answer: |
           Yes.
 
+      - question: |
+          When viewing my Traffic Analytics workbooks, my data doesn't load due to 'low memory error'. How can I fix this to view my data in workbook? 
+        answer: |
+          Traffic Analytics workbooks are powered by Log Analytics queries. If the query exceeds limits for log analytics, the workbook could present low memory errors. To improve performance and reduce low memory errors, users can use Dedicated Log Analytics Clusters.
+
       - question: |
           Will I lose the data stored in Log Analytics workspace if I delete the storage account used for flow logging?
         answer: |