docs in example

examples/anvil-utils/examples/get_contracts_from_registry.rs

@@ -1,9 +1,11 @@
+//! Example to showcase testing EL contracts using anvil
 use eigen_testing_utils::anvil_constants::{
     get_delegation_manager_address, get_erc20_mock_strategy, get_operator_state_retriever_address,
     get_registry_coordinator_address, get_service_manager_address, get_strategy_manager_address,
 };
 use eyre::Result;
 
+/// Calling ContractsRegistry contract to extract the El contract addresses on anvil
 #[tokio::main]
 pub async fn main() -> Result<()> {
     get_service_manager_address().await;