Update TabularDataByMQL documentation (#837)

Author: dmhilly

src/viam/app/data_client.py

@@ -364,8 +364,9 @@ async def tabular_data_by_mql(
         Args:
             organization_id (str): The ID of the organization that owns the data.
                 You can obtain your organization ID from the Viam app's organization settings page.
-            query (Union[List[bytes], List[Dict[str, Any]]]): The MQL query to run as a list of BSON queries.
-                Note: Support for bytes will be removed in the future, so using a dictionary is preferred.
+            query (Union[List[bytes], List[Dict[str, Any]]]): "The MQL query to run, as a list of MongoDB aggregation pipeline stages. 
+                Note: Each stage can be provided as either a dictionary or raw BSON bytes, but support for bytes will be removed in the future, 
+                so using a dictionary is preferred.
 
         Returns:
             List[Dict[str, Union[ValueTypes, datetime]]]: An array of decoded BSON data objects.