Lists render incorrectly when not separated

[dvdhrm]

The lists in Approved RFCs render as normal text in the last 2 newsletters:

https://this-week-in-rust.org/blog/2026/01/07/this-week-in-rust-633/
https://this-week-in-rust.org/blog/2025/12/31/this-week-in-rust-632/

Like so:

Changes to Rust follow the Rust RFC (request for comments)
process. These are the RFCs that were approved for
implementation this week: * build-std: context

(notice the * build-std: context at the end)

The GitHub markdown renderer correctly renders them as list, so it does not show up in the github UI, just on the webpage (and some external markdown renderers, where I caught this).

Maybe always put an empty line between a paragraph and a list?