FIX: Typo

Author: nhatcher-frequenz

src/graph/test_utils.rs

@@ -2,7 +2,7 @@
 // Copyright © 2024 Frequenz Energy-as-a-Service GmbH
 
 //! This module is only compiled when running unit tests and contains features
-//! that are shared by all tests of the `graph` modue.
+//! that are shared by all tests of the `graph` module.
 //!
 //! - the `TestComponent` and `TestConnection` types, which implement the `Node`
 //!   and `Edge` traits respectively.