f Update resolution_period to 1 minute

The mpp_timeout defined by the spec is currently 1 minute, so we
shouldn't punish any peers for resolution times that the spec deems
acceptable.

04-onion-routing.md

@@ -1454,7 +1454,7 @@ forward unendorsed HTLCs that they are not certain about.
 HTLC resolution time is assessed relative to a threshold that the node 
 considers to be a reasonable amount of time for a HTLC to resolve: 
 - `resolution_period`: the amount of time a HTLC is allowed to resolve in that 
-  is classified as "good" behavior, expressed in seconds (default: 10 seconds).
+  is classified as "good" behavior, expressed in seconds (default: 60 seconds).
 - `resolution_time`: the time elapsed between `update_add_htlc` and its 
   resolution (`update_fulfill_hltc` / `update_fail_hltc` / 
   `update_fail_malformed_htlc`), expressed in seconds.