manual.texi BDB log files have 10 digit extension, not 6.

Docs/manual.texi

@@ -40667,7 +40667,7 @@ The effect of this is that BDB tables are not movable between directories!
 When taking backups of BDB tables, you have to either use
 @code{mysqldump} or take a backup of all @code{table_name.db} files and
 the BDB log files.  The BDB log files are the files in the base data
-directory named @code{log.XXXXXX} (6 digits);
+directory named @code{log.XXXXXXXXXX} (ten digits);
 The BDB table handler stores unfinished transactions in the log files
 and requires these to be present when @code{mysqld} starts.
 @end itemize