Apply suggestions from code review

Co-authored-by: Romain Ruetschi <romain@informal.systems>
Signed-off-by: Luca Joss <43531661+ljoss17@users.noreply.github.com>

config.toml

@@ -82,14 +82,14 @@ auto_register_counterparty_payee = false
 # Set the maximum size for the memo field in ICS20 packets.
 # If the size of the memo field is bigger than the configured
 # one, the packet will not be relayed.
-# [Default: 32768 (32Kb)]
-#ics20_max_memo_size = 32768
+# [Default: "32KiB"]
+#ics20_max_memo_size = "32KiB"
 
 # Set the maximum size for the receiver field in ICS20 packets.
 # If the size of the receiver field is bigger than the configured
 # one, the packet will not be relayed.
-# [Default: 32768 (2Kb)]
-#ics20_max_receiver_size = 2048
+# [Default: "2KiB"]
+#ics20_max_receiver_size = "2KiB"
 
 # The REST section defines parameters for Hermes' built-in RESTful API.
 # https://hermes.informal.systems/rest.html