grandpa: fix broken line breaks in logging (#9179)

substrate/client/finality-grandpa/src/authorities.rs

@@ -295,8 +295,7 @@ where
 
 		debug!(
 			target: "afg",
-			"Inserting potential standard set change signaled at block {:?} (delayed by {:?}
-			blocks).",
+			"Inserting potential standard set change signaled at block {:?} (delayed by {:?} blocks).",
 			(&number, &hash),
 			pending.delay,
 		);
@@ -310,7 +309,7 @@ where
 
 		debug!(
 			target: "afg",
-			"There are now {} alternatives for the next pending standard change (roots), and a
+			"There are now {} alternatives for the next pending standard change (roots), and a \
 			 total of {} pending standard changes (across all forks).",
 			self.pending_standard_changes.roots().count(),
 			self.pending_standard_changes.iter().count(),

substrate/client/finality-grandpa/src/import.rs

@@ -372,9 +372,8 @@ where
 						self.inner.header(BlockId::Number(canon_number))
 							.map_err(|e| ConsensusError::ClientImport(e.to_string()))?
 							.expect(
-								"the given block number is less or equal than the current best
-								finalized number; current best finalized number must exist in
-								chain; qed."
+								"the given block number is less or equal than the current best finalized number; \
+								 current best finalized number must exist in chain; qed."
 							)
 							.hash();
 

substrate/client/finality-grandpa/src/lib.rs

@@ -945,7 +945,7 @@ where
 			.collect::<Vec<_>>();
 
 		let authorities = serde_json::to_string(&authorities).expect(
-			"authorities is always at least an empty vector; elements are always of type string",
+			"authorities is always at least an empty vector; elements are always of type string; qed.",
 		);
 
 		telemetry!(