sets providerMetadata doctrine type as 'json_array' instead of unsupport...

Hi,

I was generating the schema for my database and got a dbalexception saying:

[Doctrine\DBAL\DBALException]
  Unknown column type "json" requested.

So I this fixed for me: changing it to 'json_array' according to Doctrine\DBAL\Types\Type

regards
javier