Fix README with quoted emoji

README.md

@@ -1,6 +1,6 @@
 ---
-title: Medical Document Retrieval
-emoji: 
+title: Medical Document Retrieval  
+emoji: ""
 colorFrom: blue
 colorTo: green
 sdk: gradio
@@ -15,7 +15,7 @@ This system uses BM25 + Dense Embeddings + RRF Fusion to search across 10,000+ m
 
 **Models:**
 - BM25 Index (keyword-based)
-- Dense Embeddings (embeddinggemma-300m-medical)
+- Dense Embeddings (embeddinggemma-300m-medical)  
 - RRF Fusion (combines both approaches)
 
 **Note:** First startup takes 5-8 minutes to build indexes. Please be patient!