Merge bitcoin/bitcoin#33133: rpc: fix getpeerinfo ping duration unit docs

1252eeb rpc: fix getpeerinfo ping duration unit docs (0xb10c)

Pull request description:

  The docs have been incorrect since a3789c7 (released in v25; master since Sept. 2022). Noticed while setting up monitoring using getpeerinfo.

  https://github.com/bitcoin/bitcoin/blob/0cb1ed2b7c634754f4ad0a0083d7cf40989d7f48/src/rpc/net.cpp#L249-L257

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Tree-SHA512: 33f576336b2a4d9533f51f4641d564ee59ef692c5fa9a3cad239fc31465883d5da534bfd0e069be1e1d688e5f0dea3fe6850be19bf35335041b8f414d08f7f09

Author: fanquake

src/rpc/net.cpp

@@ -85,7 +85,7 @@ static RPCHelpMan ping()
     return RPCHelpMan{
         "ping",
         "Requests that a ping be sent to all other nodes, to measure ping time.\n"
-                "Results provided in getpeerinfo, pingtime and pingwait fields are decimal seconds.\n"
+                "Results are provided in getpeerinfo.\n"
                 "Ping command is handled in queue with all other commands, so it measures processing backlog, not just network ping.\n",
                 {},
                 RPCResult{RPCResult::Type::NONE, "", ""},
@@ -150,9 +150,9 @@ 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, "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, "pingtime", /*optional=*/true, "The last ping time in seconds, if any"},
+                    {RPCResult::Type::NUM, "minping", /*optional=*/true, "The minimum observed ping time in seconds, if any"},
+                    {RPCResult::Type::NUM, "pingwait", /*optional=*/true, "The duration in seconds 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)"},