qapi/schema: Call QAPIDoc.connect_member() in just one place

The .connect_doc() of classes that have QAPISchemaMember connect them
to their documentation.  Change them to delegate the actual work to
new QAPISchemaMember.connect_doc().  Matches the .connect_doc() that
already exist.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20200317115459.31821-20-armbru@redhat.com>
1 file changed