This release contains the .zip of the Trilium Rocks theme that you can import into your Trilium instance and then you can just assign the following attributes to the notes you want to share after importing the zip:
~shareTemplate(inheritable)=Rocks Template ~shareCss(inheritable)=Rocks CSS ~shareJs(inheritable)=Rocks JS #toc=hide
OR follow the instructions here (minus all the parts about setting up the note)
Make sure that all the Rocks entries above are actual internal links to the respective Note in your Trilium.