Correct error from prior commit's edits

substrate/client/tests/common/mod.rs

@@ -37,7 +37,7 @@ macro_rules! serai_test {
         }));
 
         let mut test = DockerTest::new().with_network(dockertest::Network::Isolated);
-        test.add_composition(composition);
+        test.provide_container(composition);
         test.run_async(|ops| async move {
           // Sleep until the Substrate RPC starts
           let serai_rpc = ops.handle(handle).host_port(9944).unwrap();