docs: Mark error analyzer as preview feature with maturity disclaimer

Author: Bob Strahan

docs/error-analyzer.md

@@ -1,9 +1,10 @@
-# Error Analyzer (Troubleshooting Tool)
+# Error Analyzer (Troubleshooting Tool) - PREVIEW
 
 ## Overview
 
 The Error Analyzer is an intelligent AI-powered troubleshooting tool that helps diagnose and resolve document processing failures in the GenAI IDP Accelerator. It uses Amazon Bedrock's Claude Sonnet 4 model with the Strands agent framework to automatically analyze CloudWatch logs, DynamoDB tracking data, and Step Functions execution history to identify root causes and provide actionable recommendations.
 
+This tool is not yet mature - we expect to refine and improve the capabilities in sucessive releases. Try it, and give us feedback via GitHub Issues.
 
 https://github.com/user-attachments/assets/78764207-0fcf-4523-ad12-f428581a685f