Update _posts/2020-10-19-rust-2.0.0-release.md

Co-authored-by: Mahmut Bulut <vertexclique@gmail.com>
diff --git a/_posts/2020-10-19-rust-2.0.0-release.md b/_posts/2020-10-19-rust-2.0.0-release.md
index d859189..1d08867 100644
--- a/_posts/2020-10-19-rust-2.0.0-release.md
+++ b/_posts/2020-10-19-rust-2.0.0-release.md
@@ -100,7 +100,7 @@
 DataFusion query execution now uses `async`/`await` with the tokio threaded runtime rather than launching dedicated 
 threads, making queries scale much better across available cores.
 
-The hash aggregate physical operator has been largely re-written, resulting in significant performance improvements.
+The hash aggregate physical operator has been primarily re-written, resulting in significant performance improvements.
 
 ## Expressions and Compute