fix the database.py indent

database.py

@@ -45,7 +45,7 @@ class Database():
         except Exception as e:
             return e
     
-     def get_sensor_readings(self, limit, machine_id):
+    def get_sensor_readings(self, limit, machine_id):
         try:
             query = self.__supabase.table("sensor_readings").select("*")
             
@@ -77,7 +77,7 @@ class Database():
                 
                 logger.debug(f"Retrieved single sensor reading - UDI: {current_udi}, Machine: {machine_id}")
                 return current_reading
-
+    
             else:
                 # Multiple readings mode - no duplicate check, used for time-series
                 logger.debug(f"Retrieved {len(response.data)} sensor readings for time-series prediction")