Correct the repo url in installation instructions

Author: lnay

README.md

@@ -11,7 +11,7 @@ This is an MCP (Model Context Protocol) server that provides tools for Rust crat
 ## Installation
 
 ```bash
-git clone https://github.com/yourusername/cratedocs-mcp.git
+git clone https://github.com/d6e/cratedocs-mcp.git
 cd cratedocs-mcp
 cargo build --release
 ```