manual.texi Added a note that tablespace has to be >= 10 MB

Docs/manual.texi:
  Added a note that tablespace has to be >= 10 MB

Docs/manual.texi

@@ -36019,7 +36019,9 @@ set-variable = innodb_lock_wait_timeout=50
 @end example
 
 Note that data files must be < 4G, and < 2G on
-some file systems! InnoDB does not create directories:
+some file systems! The total size of data files have
+to be >= 10 MB.
+InnoDB does not create directories:
 you have to create them yourself.
 
 Suppose you have a Linux machine with 512 MB RAM and