Update install instructions (#90)

Updating install instructions

README.md

@@ -13,7 +13,7 @@ A cargo subcommand for building, verifying, and deploying Arbitrum Stylus WASM c
 Install [Rust](https://www.rust-lang.org/tools/install), and then install the plugin using the Cargo tool:
 
 ```
-cargo install --force cargo-stylus cargo-stylus-check
+cargo install cargo-stylus
 ```
 
 Add the `wasm32-unknown-unknown` build target to your Rust compiler: