remove emojis from console

DATA_STREAM_GUIDE.md

@@ -25,9 +25,9 @@ python check_stream.py snapshot
 ## What You'll See
 
 ### Stream Status Output
-- ✅ Dashboard is running
+-  Dashboard is running
 - 📊 Health status
-- 🔄 Stream connection and streaming status
+-  Stream connection and streaming status
 - 📈 Total samples and active streams
 - 🟢/🔴 Buffer sizes for each data type
 
@@ -46,7 +46,7 @@ python check_stream.py snapshot
 - Bid/ask volumes for each bucket
 
 ### Snapshot Output
-- ✅ Snapshot saved with filepath
+-  Snapshot saved with filepath
 - 📅 Timestamp of creation
 
 ## API Endpoints