doc: Update doc with the new parameter supported

Changelog-Added: Support to listpays the status parameter to filter the payments by status.

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

Author: vincenzopalazzo

doc/lightning-listpays.7

@@ -4,13 +4,14 @@ lightning-listpays -- Command for querying payment status
 SYNOPSIS
 --------
 
-**listpays** \[bolt11\] \[payment_hash\]
+**listpays** \[bolt11\] \[payment_hash\] \[status\]
 
 DESCRIPTION
 -----------
 
 The **listpay** RPC command gets the status of all *pay* commands, or a
 single one if either *bolt11* or *payment_hash* was specified.
+It is possible filter the payments also by status.
 
 RETURN VALUE
 ------------

doc/lightning-listpays.7.md

@@ -4630,7 +4630,7 @@ def test_listpays_with_filter_by_status(node_factory, bitcoind):
     wait_for(lambda: l2.rpc.listpays(inv['bolt11'])['pays'][0]['status'] == 'complete')
 
     # test if the node is still ready
-    payments = l2.rpc.call("listpays", {"status": 'failed'})
+    payments = l2.rpc.listpays(status='failed')
 
     assert len(payments['pays']) == 0