Update posts/2021-05-06-Rust-1.52.0.md

Co-authored-by: Pietro Albini <[email protected]>

posts/2021-05-06-Rust-1.52.0.md

@@ -29,7 +29,7 @@ The most significant change in this release is not to the language or standard
 libraries, but rather an enhancement to tooling support for Clippy.
 
 Previously, running `cargo check` followed by `cargo clippy` wouldn't actually
-run clippy: the build caching in Cargo didn't differentiate between the two. In
+run Clippy: the build caching in Cargo didn't differentiate between the two. In
 1.52, however, this has been fixed, which means that users will get the expected
 behavior independent of the order in which they run the two commands.