f update docs on Retry again

Author: TheBlueMatt

lightning/src/ln/outbound_payment.rs

@@ -226,9 +226,9 @@ impl PendingOutboundPayment {
 pub enum Retry {
 	/// Max number of attempts to retry payment.
 	///
-	/// This is the number of additional paths along which the payment will be retried after the
-	/// first payment. If two paths fail at around the same time and are retried with a single
-	/// MPP path/HTLC, it will only count as a single retry.
+	/// This is the number of retried sends done. Each send may be multiple HTLCs along multiple
+	/// paths if the router decides to split up a send, and may retry multiple failed HTLCs if they
+	/// failed around the same time and were retried with a single [`Route`].
 	Attempts(usize),
 	#[cfg(not(feature = "no-std"))]
 	/// Time elapsed before abandoning retries for a payment.