Adding a link to 'Recent updates in IntelliJ Rust' (Tooling)

Author: MarinaKalashina

draft/2021-04-07-this-week-in-rust.md

@@ -21,6 +21,7 @@ No newsletters this week.
 ### Project/Tooling Updates
 * [A new Left Recursive PEG Parser Generator for rust](https://www.mess.org/2021/03/26/Left-Recursive-PEG-Parser-Generator/)
 * [Last Month in Flott (Motion Control Toolkit in Rust) - April 2021](https://flott-motion.org/news/last-month-in-flott-april-2021/)
+* [Recent updates in IntelliJ Rust](https://blog.jetbrains.com/rust/2021/04/08/intellij-rust-updates-for-2021-1/)
 
 ### Observations/Thoughts
 * [Interfacing a low-level actor system to Rust async/await, part 1](https://uazu.github.io/blog/20210406.html)