Merge pull request rust-lang#6983 from rust-lang/fix-link-gpui

Patch contribution for 615 Walkthroughs

Author: mariannegoldin

draft/2025-09-03-this-week-in-rust.md

@@ -64,6 +64,7 @@ and just ask the editors to select the category.
 ### Rust Walkthroughs
 
 * [Let's write a macro in Rust - Part 2](https://hackeryarn.com/post/rust-macros-2/)
+* [Building a Todo App in GPUI](https://blog.0xshadow.dev/posts/learning-gpui/gpui-todo-app/)
 
 ### Research