Generate articles in markdown format

### Please describe why you are requesting a feature
The latest iteration of Faker (v0.17) includes article generator with option to convert it to markdown format.
I believe a lot of us would benefit from having access to it.

### Please answer any or all of the questions below

* Is the feature something that currently cannot be done?
No

* What alternatives have you considered?
Using Faker.net, but it's also outdated and not nearly as good as Bogus

* Is this feature request any issues or current problems?
No

* Has the feature been requested in the past?
No

**If the feature request is approved, would you be willing to submit a PR?**
Yes, perhaps.

No files, tests, or entry points are named. Start by locating the existing article-generation APIs in Bogus and reviewing how similar generator features are tested. Done means users can access article generation with an option that returns Markdown-formatted output.

Written by the indexing model from the issue text.