Update search-ai-assistant.md

Author: bmorelli25

raw-migrated-files/kibana/kibana/search-ai-assistant.md

@@ -59,7 +59,7 @@ This opens the AI Assistant chat interface flyout.
 
 :::{image} ../../../images/kibana-ai-assistant-welcome-chat.png
 :alt: AI Assistant Welcome chat
-:class: "screenshot
+:class: screenshot
 :::
 
 You can get started by selecting **✨ Suggest** to get some example prompts, or by typing into the chat field.