docs: fix broken link (#53)

Author: TaKO8Ki

README.md

@@ -4,7 +4,7 @@
 
 # RMCP
 [![Crates.io Version](https://img.shields.io/crates/v/rmcp)](https://crates.io/crates/rmcp)
-![Release status](https://github.commodelcontextprotocol/rust-sdk/actions/workflows/release.yml/badge.svg)
+![Release status](https://github.com/modelcontextprotocol/rust-sdk/actions/workflows/release.yml/badge.svg)
 [![docs.rs](https://img.shields.io/docsrs/rmcp)](https://docs.rs/rmcp/latest/rmcp)
 
 An official rust Model Context Protocol SDK implementation with tokio async runtime.