chore: update docs

Author: hashemix

docs/_coverpage.md

@@ -16,6 +16,7 @@
 - ⚙️ CI/CD-friendly
 
 [GitHub](https://github.com/rust-mcp-stack/mcp-discovery)
+[Install](https://rust-mcp-stack.github.io/mcp-discovery#/quickstart)
 [Get Started](#mcp-discovery)
 
 <!-- background color -->

docs/quickstart.md

@@ -26,6 +26,12 @@ powershell -ExecutionPolicy Bypass -c "irm https://github.com/rust-mcp-stack/mcp
 brew install rust-mcp-stack/tap/mcp-discovery
 ```
 
+#### **Cargo**
+
+```sh
+cargo install mcp-discovery --locked
+```
+
 #### **Download Binaries**
 
 <table>