Fixes MR web preview links.

Lars Bilke authored 6 years ago and Dmitry Yu. Naumov committed 6 years ago

Fixes formula rendering errors. Pandoc is also a superset of Markdown
with lots of useful features. For the future we should use just Pandoc
as format.

Ordering is done per weight parameter:

starting at  101 - benchmarks
starting at 1001 - devguide

This fixes build errors when node modules were updated.
It should not be costly as yarn caches downloads.

entries.