[BUG] Glossary renderer is unaware of version (Markdown or PDF)

[oesteban]

Describe your problem in detail.

As a result, #1781 will introduce a bug that hides the Description field in glossary terms having one (e.g., common principles).

Before #1781, the parsing of newlines in the description preempts any sophistication beyond paragraphs.

Describe what you expected.

Both versions render properly.

BIDS specification section

https://bids-specification.readthedocs.io/en/latest/...