Improve getpeerinfo pingtime, minping, and pingwait help docs

Author: jonatack

src/rpc/net.cpp

@@ -123,9 +123,9 @@ static RPCHelpMan getpeerinfo()
                     {RPCResult::Type::NUM, "bytesrecv", "The total bytes received"},
                     {RPCResult::Type::NUM_TIME, "conntime", "The " + UNIX_EPOCH_TIME + " of the connection"},
                     {RPCResult::Type::NUM, "timeoffset", "The time offset in seconds"},
-                    {RPCResult::Type::NUM, "pingtime", /*optional=*/true, "ping time (if available)"},
-                    {RPCResult::Type::NUM, "minping", /*optional=*/true, "minimum observed ping time (if any at all)"},
-                    {RPCResult::Type::NUM, "pingwait", /*optional=*/true, "ping wait (if non-zero)"},
+                    {RPCResult::Type::NUM, "pingtime", /*optional=*/true, "The last ping time in milliseconds (ms), if any"},
+                    {RPCResult::Type::NUM, "minping", /*optional=*/true, "The minimum observed ping time in milliseconds (ms), if any"},
+                    {RPCResult::Type::NUM, "pingwait", /*optional=*/true, "The duration in milliseconds (ms) of an outstanding ping (if non-zero)"},
                     {RPCResult::Type::NUM, "version", "The peer version, such as 70001"},
                     {RPCResult::Type::STR, "subver", "The string version"},
                     {RPCResult::Type::BOOL, "inbound", "Inbound (true) or Outbound (false)"},