Correct AUTO RELEASE TEMP BLOBID description

Author: ilya071294

doc/sql.extensions/README.set_transaction.txt

@@ -27,11 +27,12 @@ commit fails. This option is mostly used by gfix.
 LOCK TIMEOUT nonneg_short_integer: it's the time (measured in seconds) that a
 transaction waits for a lock in a record before giving up and reporting an error.
 
-AUTO RELEASE TEMP BLOBID: makes the transaction release temporary ID of user BLOB
-just after its materialization. It's useful for massive insertions of records with
-user-defined BLOBs because it eliminates the memory overhead caused by creating and
-keeping temporary IDs until the transaction ends. This option is used during the
-database restore.
+AUTO RELEASE TEMP BLOBID: makes the transaction release a temporary ID of a user
+BLOB just after its materialization. It's useful for massive insertions of records
+with user-defined BLOBs because it eliminates the memory overhead caused by creating
+and keeping temporary IDs until the transaction ends. This option should be used
+with care and only if there is no need to access a materialized BLOB via a temporary
+ID obtained after its creation. It's used during the database restore.
 
 
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