doc: correct a few paraeters in 02-database.md

docs/zh/12-taos-sql/02-database.md

@@ -18,7 +18,7 @@ database_option: {
   | CACHESIZE value
   | COMP {0 | 1 | 2}
   | DURATION value
-  | FSYNC value
+  | WAL_FSYNC_PERIOD value
   | MAXROWS value
   | MINROWS value
   | KEEP value
@@ -28,7 +28,7 @@ database_option: {
   | REPLICA value
   | RETENTIONS ingestion_duration:keep_duration ...
   | STRICT {'off' | 'on'}
-  | WAL {1 | 2}
+  | WAL_LEVEL {1 | 2}
   | VGROUPS value
   | SINGLE_STABLE {0 | 1}
   | WAL_RETENTION_PERIOD value