Merge pull request #96 from OpenZeppelin/update-contracts-stylus-version

Update contracts stylus version in docs

Author: qalisander

content/contracts-stylus/index.mdx

@@ -19,7 +19,7 @@ Add the dependency to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-openzeppelin-stylus = "=0.2.0"
+openzeppelin-stylus = "=0.3.0"
 ```
 
 Enable the ABI export feature:
@@ -34,26 +34,26 @@ export-abi = ["openzeppelin-stylus/export-abi"]
 A minimal ERC-20 implementation using the library:
 
 ```rust
-use openzeppelin_stylus::token::erc20::self, Erc20, IErc20;
-use stylus_sdk::
-    alloy_primitives::{Address, U256,
+use openzeppelin_stylus::token::erc20::{self, Erc20, IErc20};
+use stylus_sdk::{
+    alloy_primitives::{Address, U256},
     prelude::*,
 };
 
 #[entrypoint]
 #[storage]
-struct Erc20Example
+struct Erc20Example {
     erc20: Erc20,
-
+}
 
 #[public]
 #[implements(IErc20<Error = erc20::Error>)]
 impl Erc20Example {}
 
 #[public]
-impl IErc20 for Erc20Example
+impl IErc20 for Erc20Example {
     // ERC-20 logic implementation...
-
+}
 ```
 
 Explore more examples in the [`examples` directory](https://github.com/OpenZeppelin/rust-contracts-stylus/tree/main/examples).
@@ -64,7 +64,7 @@ This library is designed to work with `no_std`. To keep your contracts compatibl
 
 ```toml
 [dependencies]
-alloy-primitives =  version = "=0.8.20", default-features = false
+alloy-primitives = "=0.8.20"
 stylus-sdk = "=0.9.0"
 ```