Update README.md (dart-lang/lints#189)

pkgs/lints/README.md

diff --git a/pkgs/lints/README.md b/pkgs/lints/README.md
index c43af1c..751a72b 100644
--- a/pkgs/lints/README.md
+++ b/pkgs/lints/README.md
@@ -39,7 +39,7 @@
 
 ## Where these lints are used
 
-When creating new Dart project using the [`dart create`][dart create] command,
+When creating a new Dart project using the [`dart create`][dart create] command,
 the `recommended` set of lints from `package:lints` is enabled by default.
 
 When uploading a package to the [pub.dev] package repository, packages are