Tutorial improvement for instal on Debian 9

[Ludovic MESSINGER]

Hello,

I have installed OM 4 with the tutorial forDebian 9 and I think 
something should be improved in the tutorial:

In the step MariaDB [(none)]> CREATE DATABASE open401 DEFAULT CHARACTER 
SET 'utf8';

I had to replace by MariaDB [(none)]> CREATE DATABASE open401 default 
CHARACTER set utf8 default COLLATE utf8_general_ci;
because this error occured when creating the table :  "Specified key was 
too long; max key length is 767 bytes"

Regards,
Ludovic