Documentation block on the package info page doesn't display markdown correctly until you click "show more"

[natemcmaster]

The gallery's rendering of the short version of the "documentation" block and the expanded section are not the same. The short version does not render markdown correctly. Clicking the "show more" link expands the block and renders the markdown correctly.

Repro

1. Edit a package. E.g. https://www.nuget.org/packages/Yarn.MSBuild/1.0.1/Edit
2. Add this URL to the "Import Readme" => "URL" box: https://raw.githubusercontent.com/natemcmaster/Yarn.MSBuild/v1.0.1/README.md. This file contains this section

Expected result

The "Documentation" section of https://www.nuget.org/packages/Yarn.MSBuild/1.0.1 shows the first paragraph or two from my README file

Actual result

See https://www.nuget.org/packages/Yarn.MSBuild/1.0.1

The page shows what is normally "invisible" markdown, aka, markdown links.

Before clicking "Show more"

After clicking "Show more"

[anangaur]

Dupe of #4770

[chenriksson]

Closing, will track with #4770