f clarify cases in docs

Author: TheBlueMatt

lightning/src/chain/channelmonitor.rs

@@ -1357,8 +1357,8 @@ impl<Signer: Sign> ChannelMonitor<Signer> {
 	}
 
 	/// Gets the balances in this channel which are either claimable by us if we were to
-	/// force-close the channel now or which are claimable on-chain or claims which are awaiting
-	/// confirmation.
+	/// force-close the channel now or which are claimable on-chain (possibly awaiting
+	/// confirmation).
 	///
 	/// Any balances in the channel which are available on-chain (excluding on-chain fees) are
 	/// included here until an [`Event::SpendableOutputs`] event has been generated for the