Update Marketplace Verbiage of Base Image offers

[edburns]

See #273

[m-reza-rahman]

I just took a brief look at the marketplace and noticed the following issues. These issues are probably on the portal too:

• The CONTACT ME page is still out of date.
• The video is still the old one.
• The formatting for the base images looks like they are missing line breaks, impeding readability.
• Some of the descriptions still explicitly refer to 12c.
• The OHS and OL references in the titles, etc should probably spell out Oracle HTTP Server and Oracle Linux if space allows. The problem is that more inexperienced users on Azure may miss these references otherwise.