Update README.md

Co-authored-by: Gus Cairo <[email protected]>

README.md

@@ -8,7 +8,7 @@ for [gRPC Swift][gh-grpc-swift-protobuf].
   the [Swift Package Index][spi-grpc-swift].
 - 💻 **Examples** are available in the `Examples` directory of the
   [`grpc/grpc-swift`](https://github.com/grpc/grpc-swift) repository
-- 🚀 **Contributions** are welcome, pleasee see [CONTRIBUTING.md](CONTRIBUTING.md)
+- 🚀 **Contributions** are welcome, please see [CONTRIBUTING.md](CONTRIBUTING.md)
 - 🪪 **License** is Apache 2.0, repeated in [LICENSE](License)
 - 🔒 **Security** issues should be reported via the process in [SECURITY.md](SECURITY.md)