Add Cow for efficient memory utilization post link

YJDoc2 · web-flow · commit 4b3bd2858c0e · 2023-03-23T09:19:33.000+05:30
This adds the blog post link for Using Cow in Rust for efficient memory utilization
diff --git a/draft/2023-03-22-this-week-in-rust.md b/draft/2023-03-22-this-week-in-rust.md
@@ -38,6 +38,7 @@ and just ask the editors to select the category.
 ### Observations/Thoughts
 
 ### Rust Walkthroughs
+- [Using Cow in Rust for efficient memory utilization](https://blog.logrocket.com/using-cow-rust-efficient-memory-utilization/)
 
 ### Research
 
