f remove extra dot

Author: TheBlueMatt

lightning/src/ln/channelmanager.rs

@@ -4488,7 +4488,7 @@ impl<M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelManager<M, T, K, F
 			// duplicate claim, but we have no way of knowing without interrogating the
 			// `ChannelMonitor` we've provided the above update to. Instead, note that `Event`s are
 			// generally always allowed to be duplicative (and it's specifically noted in
-			// `PaymentForwarded`)..
+			// `PaymentForwarded`).
 			self.handle_monitor_update_completion_actions(completion_action(None));
 			return ClaimFundsFromHop::PrevHopForceClosed
 		}