Update config.rs

Co-authored-by: dylan <dylan@init4.technology>

Author: prestwich

src/config.rs

@@ -40,7 +40,7 @@ pub struct BuilderConfig {
     /// The chain ID of the host chain
     #[from_env(var = "HOST_CHAIN_ID", desc = "The chain ID of the host chain")]
     pub host_chain_id: u64,
-    /// The chain ID of the host chain
+    /// The chain ID of the rollup chain
     #[from_env(var = "RU_CHAIN_ID", desc = "The chain ID of the rollup chain")]
     pub ru_chain_id: u64,
     /// URL for Host RPC node.