Update 2025-03-26-this-week-in-rust.md

Add https://jtjlehi.github.io/2024/03/13/fastest-vec-update-on-my-computer.html

Author: jtjlehi

draft/2025-03-26-this-week-in-rust.md

@@ -41,6 +41,8 @@ and just ask the editors to select the category.
 
 ### Rust Walkthroughs
 
+* [Fastest Vec Update on My Computer](https://jtjlehi.github.io/2024/03/13/fastest-vec-update-on-my-computer.html)
+
 ### Research
 
 ### Miscellaneous