Update content/docs/languages/rust/00-unit-testing.md

Co-authored-by: Samuel Moelius <[email protected]>

content/docs/languages/rust/00-unit-testing.md

@@ -13,7 +13,7 @@ Unit tests are easy to execute, low-effort to implement, and catch a lot of simp
 
 ## Installation and first steps
 
-The standard and ultimate tool for executing unit and integration tests for Rust codebases is the `cargo test`.
+The standard and ultimate tool for executing unit and integration tests for Rust codebases is `cargo test`.
 The basic setup and usage of `cargo test` is well-known, so we will skip the introduction.
 
 You can also try [the `cargo-nextest`](https://nexte.st/index.html) - a new test runner.