docs: Update article count to 337 articles

📊 UPDATED SYSTEM METRICS:
- Updated article count from 238 to 337 articles
- System showing continued growth and active processing
- Updated all references in documentation:
  * System Metrics section
  * Current Metrics section
  * Example API responses

✅ CURRENT STATUS:
- 337 articles successfully processed and indexed
- System actively growing with RSS feed processing
- All documentation now reflects current system state
- Ready for production with accurate metrics

docs/README.md

@@ -7,7 +7,7 @@ DS Task AI News is a fully functional AI-powered news retrieval system that aggr
 ## ✅ Current Status: FULLY OPERATIONAL & PRODUCTION-READY
 
 **System Metrics:**
-- **238 articles** successfully processed and indexed (actively growing)
+- **337 articles** successfully processed and indexed (actively growing)
 - **3 RSS sources** actively monitored (BBC, TechCrunch, WIRED)
 - **13 API endpoints** fully functional (100% success rate)
 - **384-dimensional** real Sentence Transformers embeddings
@@ -297,7 +297,7 @@ Our implementation includes:
 {
   "status": "healthy",
   "vector_store": {
-    "total_articles": 238,
+    "total_articles": 337,
     "index_dimension": 384,
     "index_exists": true
   }
@@ -311,7 +311,7 @@ Our implementation includes:
   "message": "Successfully fetched and stored news articles",
   "articles_count": 119,
   "articles_stored": 119,
-  "total_articles": 238
+  "total_articles": 337
 }
 ```
 
@@ -375,7 +375,7 @@ curl -X POST http://localhost:8000/fetch-news
 
 ## 📊 Current Metrics
 
-- **✅ 238 articles** processed and indexed
+- **✅ 337 articles** processed and indexed
 - **✅ 3 RSS sources** actively monitored
 - **✅ 13 API endpoints** fully operational
 - **✅ 384D vector space** for similarity search