Add link to LF workshop website

Author: jasongrout

community.md

@@ -160,6 +160,7 @@ of contributors, and strengthening collaborations.
 #### Round 5: 2025-2026
 - [Round 5: Call for Proposals](https://blog.jupyter.org/jupyter-community-workshops-are-back-3cca15d02975)
 - [Round 5: Announcement of Workshops](https://blog.jupyter.org/jupyter-community-workshops-early-2026-a9ce9670ba19)
+- [Round 5: Workshop submission and list of workshops](https://events.linuxfoundation.org/jupyter-workshops/)
 
 ### Jupyter Community Calls