Describe maxmempool and mempoolminfee in the getmempoolinfo RPC help.

src/rpcblockchain.cpp

@@ -795,9 +795,11 @@ UniValue getmempoolinfo(const UniValue& params, bool fHelp)
             "\nReturns details on the active state of the TX memory pool.\n"
             "\nResult:\n"
             "{\n"
-            "  \"size\": xxxxx                (numeric) Current tx count\n"
-            "  \"bytes\": xxxxx               (numeric) Sum of all tx sizes\n"
-            "  \"usage\": xxxxx               (numeric) Total memory usage for the mempool\n"
+            "  \"size\": xxxxx,               (numeric) Current tx count\n"
+            "  \"bytes\": xxxxx,              (numeric) Sum of all tx sizes\n"
+            "  \"usage\": xxxxx,              (numeric) Total memory usage for the mempool\n"
+            "  \"maxmempool\": xxxxx,         (numeric) Maximum memory usage for the mempool\n"
+            "  \"mempoolminfee\": xxxxx       (numeric) Minimum fee for tx to be accepted\n"
             "}\n"
             "\nExamples:\n"
             + HelpExampleCli("getmempoolinfo", "")