updates Attack Discovery doc and images

Author: benironside

docs/AI-for-security/images/attck-disc-select-model-empty-state.png

@@ -44,7 +44,7 @@ While Attack discovery is compatible with many different models, our testing fou
 It may take from a few seconds up to several minutes to generate discoveries, depending on the number of alerts and the model you selected. 
 
 <DocCallOut title="Important">
-Attack discovery is in technical preview and will only analyze opened and acknowleged alerts from the past 24 hours. By default it only analyzes up to 20 alerts within this timeframe, but you can expand this up to 100 by going to **AI Assistant → Settings (<DocIcon type="gear" title="settings icon"/>) → Knowledge Base** and updating the **Alerts** setting.
+Attack discovery is in technical preview and will only analyze opened and acknowleged alerts from the past 24 hours. By default it analyzes up to 100 alerts within this timeframe, but you can expand this up to 500 by clicking the settings icon <DocIcon type="gear" title="Settings icon"/> next to the model selection menu. Note that sending more alerts than your chosen LLM can handle may result in an error.
 </DocCallOut>
 
 ![AI Assistant knowledge base menu](../images/ai-assistant/assistant-kb-menu.png)