Formated the doc with correct set of example query

docs/tables/gcp_logging_log_entry.md

@@ -189,29 +189,30 @@ Explore the most recent activities in your system by checking the last entries i
 select
   log_name,
   insert_id,
-  log_entry_operation_last,
+  operation ->> 'Last' as log_entry_operation_last,
   receive_timestamp,
   resource_type,
   severity,
   text_payload
 from
   gcp_logging_log_entry
 where
-  log_entry_operation_last;
+  (operation ->> 'Last')::boolean;
 ```
 
 ```sql+sqlite
 select
   log_name,
   insert_id,
-  operation ->> 'Last' as log_entry_operation_last,
+  json_extract(operation, '$.Last') as log_entry_operation_last,
   receive_timestamp,
   resource_type,
   severity,
   text_payload
 from
   gcp_logging_log_entry
-where (operation ->> 'Last')::boolean;
+where
+  json_extract(operation, '$.Last') = 'true';
 ```
 
 ### Filter log entries by log name