Documentation: Clarify instructions about changing row_factory for SQLite3 (#1573)
Documentation: Clarify instructions about changing row_factory for SQLite3 (#1573)

* Clarify instructions about changing row_factory

When I was working through the tutorial, this was very confusing to me; so, I've added the code and clarification that would have helped me get through it faster.

* Clarify the nature of Row objects

* Rewrite code example for further clarity.

mitsuhiko/flask,mitsuhiko/flask,auready/flask,drewja/flask,pallets/flask,Endika/flask,dawran6/flask,fkazimierczak/flask,drewja/flask,fkazimierczak/flask,tristanfisher/flask,adrianmoisey/cptdevops,drewja/flask,pallets/flask,dawran6/flask,fkazimierczak/flask,adrianmoisey/cptdevops,tristanfisher/flask,auready/flask,Endika/flask,pallets/flask