Add note in empty section

Author: phil-opp

content/this-month/2024-02/index.md

@@ -152,6 +152,8 @@ In this section, we describe updates to Rust OS projects that are not directly r
     ...<<your project updates>>...
 -->
 
+<span class="gray">No projects updates were submitted this month.</span>
+
 ## Join Us?
 
 Are you interested in Rust-based operating system development? Our `rust-osdev` organization is always open to new members and new projects. Just let us know if you want to join! A good way for getting in touch is our [gitter channel](https://gitter.im/rust-osdev/Lobby).