doc: Fix memory context level in pg_log_backend_memory_contexts() example.

Commit d9e03864b6b changed the memory context level numbers shown by
pg_log_backend_memory_contexts() to be 1-based. However, the example in
the documentation was not updated and still used 0-based numbering.

This commit updates the example to match the current 1-based output.

Author: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: David Rowley <drowleyml@gmail.com>
Discussion: https://postgr.es/m/1ad6d388-1b43-400d-bec9-36d52f755f74@oss.nttdata.com

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 1c5cfee25d12cb8eb3914246d83a78bb83bb6fdd..574a544d9fa4bf4d71467ab68fb11adfdc3cb757 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -28922,16 +28922,16 @@ One message for each memory context will be logged. For example:
 <screen>
 LOG:  logging memory contexts of PID 10377
 STATEMENT:  SELECT pg_log_backend_memory_contexts(pg_backend_pid());
-LOG:  level: 0; TopMemoryContext: 80800 total in 6 blocks; 14432 free (5 chunks); 66368 used
-LOG:  level: 1; pgstat TabStatusArray lookup hash table: 8192 total in 1 blocks; 1408 free (0 chunks); 6784 used
-LOG:  level: 1; TopTransactionContext: 8192 total in 1 blocks; 7720 free (1 chunks); 472 used
-LOG:  level: 1; RowDescriptionContext: 8192 total in 1 blocks; 6880 free (0 chunks); 1312 used
-LOG:  level: 1; MessageContext: 16384 total in 2 blocks; 5152 free (0 chunks); 11232 used
-LOG:  level: 1; Operator class cache: 8192 total in 1 blocks; 512 free (0 chunks); 7680 used
-LOG:  level: 1; smgr relation table: 16384 total in 2 blocks; 4544 free (3 chunks); 11840 used
-LOG:  level: 1; TransactionAbortContext: 32768 total in 1 blocks; 32504 free (0 chunks); 264 used
+LOG:  level: 1; TopMemoryContext: 80800 total in 6 blocks; 14432 free (5 chunks); 66368 used
+LOG:  level: 2; pgstat TabStatusArray lookup hash table: 8192 total in 1 blocks; 1408 free (0 chunks); 6784 used
+LOG:  level: 2; TopTransactionContext: 8192 total in 1 blocks; 7720 free (1 chunks); 472 used
+LOG:  level: 2; RowDescriptionContext: 8192 total in 1 blocks; 6880 free (0 chunks); 1312 used
+LOG:  level: 2; MessageContext: 16384 total in 2 blocks; 5152 free (0 chunks); 11232 used
+LOG:  level: 2; Operator class cache: 8192 total in 1 blocks; 512 free (0 chunks); 7680 used
+LOG:  level: 2; smgr relation table: 16384 total in 2 blocks; 4544 free (3 chunks); 11840 used
+LOG:  level: 2; TransactionAbortContext: 32768 total in 1 blocks; 32504 free (0 chunks); 264 used
 ...
-LOG:  level: 1; ErrorContext: 8192 total in 1 blocks; 7928 free (3 chunks); 264 used
+LOG:  level: 2; ErrorContext: 8192 total in 1 blocks; 7928 free (3 chunks); 264 used
 LOG:  Grand total: 1651920 bytes in 201 blocks; 622360 free (88 chunks); 1029560 used
 </screen>
     If there are more than 100 child contexts under the same parent, the first