Apply suggestions from code review

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

node/subsystem-util/src/lib.rs

@@ -631,7 +631,7 @@ impl<Spawner: SpawnNamed, Job: 'static + JobTrait> Jobs<Spawner, Job> {
 	async fn send_msg(&mut self, parent_hash: Hash, msg: Job::ToJob) {
 		if let Entry::Occupied(mut job) = self.running.entry(parent_hash) {
 			if job.get_mut().send_msg(msg).await.is_err() {
-				log::debug!("failed to send message to job({}), will remove it", Job::NAME);
+				log::debug!("failed to send message to job ({}), will remove it", Job::NAME);
 				job.remove();
 			}
 		}
@@ -820,7 +820,7 @@ where
 					.forward(drain())
 					.await
 				{
-					log::error!("failed to stop all jobs({}) on conclude signal: {:?}", Job::NAME, e);
+					log::error!("failed to stop all jobs ({}) on conclude signal: {:?}", Job::NAME, e);
 					let e = Error::from(e);
 					Self::fwd_err(None, JobsError::Utility(e), err_tx).await;
 				}
@@ -832,7 +832,7 @@ where
 					match to_job.relay_parent() {
 						Some(hash) => jobs.send_msg(hash, to_job).await,
 						None => log::debug!(
-							"Trying to send a message to a job({}) without specifying a relay parent.",
+							"Trying to send a message to a job ({}) without specifying a relay parent.",
 							Job::NAME,
 						),
 					}
@@ -840,7 +840,7 @@ where
 			}
 			Ok(Signal(BlockFinalized(_))) => {}
 			Err(err) => {
-				log::error!("error receiving message from subsystem context for job({}): {:?}", Job::NAME, err);
+				log::error!("error receiving message from subsystem context for job ({}): {:?}", Job::NAME, err);
 				Self::fwd_err(None, JobsError::Utility(Error::from(err)), err_tx).await;
 				return true;
 			}