Where this was a markdown heading, it sometimes had the wrong weight
so it appeared as if it was a subheading of the previous section, and
some people feel the word "Priorities" creates misleading
expectations.
Link: https://github.com/NixOS/nixpkgs/pull/203969/files#r1037761779
Adds a small text to each issue and the PR template to encourage people to use
👍's for issues they're also interested in. See
https://github.com/NixOS/nix.dev/issues/359 for more information
Co-Authored-By: Valentin Gagarin <valentin.gagarin@tweag.io>