Merge pull request #2750 from nf-core/tube-map-group

add description for tubemap group

sites/main-site/src/content/events/2024/hackathon-barcelona.mdx

@@ -145,9 +145,9 @@ You can move freely between projects throughout the event.
 </HackathonGroup>
 
 <HackathonGroup title="Tube map polishing" color="#238636" leaders={{'mashehu': 'Matthias Hörtenhuber'}}>
-    _Details coming soon_
+    Everybody loves the nf-core tube maps, but they also need some special care to gleam in all their beauty. Come join us and refine your workflows representations to their full glory. Doesn't matter if you already have a finished version and want a thorough review (🦅👀) or brainstorm some ideas and concepts to start a new one, this group is for you. Disclaimer: This will not be an introduction to vector graphic tools. You bring the tools, we bring the eyes and brains.
 
-    **Goal**: _coming soon_
+    **Goal**: Make the tube maps in pipelines even more fabulous.
 
 </HackathonGroup>