Add "organize" to list of ways to contribute

Author: joshtriplett

src/roadmaps/roadmap-2024.md

@@ -423,6 +423,6 @@ the next few years. If you'd like to help us reach these goals, please [get
 involved](https://rust-lang.zulipchat.com/#narrow/stream/318377-t-lang.2Froadmap-2024)!
 We've listed a number of active initiatives for each point, but we've also
 included a lot of ideas that are looking for an owner. Whether you prefer to
-code, design, or to document, there's work for you to do. And if the only thing
-you want to do with Rust 2024 is to use it, we welcome that too. Happy Rust
-hacking to y'all!
+code, design, document, or organize, there's work for you to do. And if the
+only thing you want to do with Rust 2024 is to use it, we welcome that too.
+Happy Rust hacking to y'all!