improve extraction

duckdb-nsql/eval/prompt_formatters.py

@@ -135,7 +135,9 @@ class RajkumarFormatter:
             return ensure_semicolon(output_sql[:semicolon_pos].strip())
 
         # If no semicolon found, use the entire text
-        return ensure_semicolon(output_sql.strip())
+        extracted = ensure_semicolon(output_sql.strip())
+        extracted = extracted.replace('```sql','').replace('```','').strip()
+        return extracted
 
     @classmethod
     def format_gold_output(cls, output_sql: str) -> str: