Style blockquote in markdown editor preview

[MikeAlhayek]

Describe the bug

Then using TheAdmin and edit content item using Markdown editor (MarkdownBodyPart and MarkdownBodyField), blockquotes are not styles in the preview.

Orchard Core version

2.0.0-previews.

To Reproduce

Steps to reproduce the behavior:

1. Create Content Type A and attach MarkdownBodyPart
2. Create a new content item of A.
3. Click on "Preview" model of the markdown editor and add a blockquote like this

The blockquote are not being styles.

Expected behavior

I expect blockquote to be styled using something like this

blockquote style example