Improve rpc docs for getblocktemplate

src/rpc/mining.cpp

@@ -544,7 +544,7 @@ UniValue getblocktemplate(const UniValue& params, bool fHelp, const CPubKey& myp
             "\nArguments:\n"
             "1. \"jsonrequestobject\"       (string, optional) A json object in the following spec\n"
             "     {\n"
-            "       \"mode\":\"template\"    (string, optional) This must be set to \"template\" or omitted\n"
+            "       \"mode\":\"template\"    (string, optional) This must be set to \"template\", \"proposal\", \"disablecb\". Default is \"template\" \n"
             "       \"capabilities\":[       (array, optional) A list of strings\n"
             "           \"support\"           (string) client side supported feature, 'longpoll', 'coinbasetxn', 'coinbasevalue', 'proposal', 'serverlist', 'workid'\n"
             "           ,...\n"
@@ -572,7 +572,7 @@ UniValue getblocktemplate(const UniValue& params, bool fHelp, const CPubKey& myp
             "      ,...\n"
             "  ],\n"
 //            "  \"coinbasevalue\" : n,               (numeric) maximum allowable input to coinbase transaction, including the generation award and transaction fees (in Satoshis)\n"
-            "  \"coinbasetxn\" : { ... },           (json object) information for coinbase transaction\n"
+            "  \"coinbasetxn\" : { ... },           (json object) information for coinbase transaction. Not present when mode=disablecb\n"
             "  \"target\" : \"xxxx\",               (string) The hash target\n"
             "  \"mintime\" : xxx,                   (numeric) The minimum timestamp appropriate for next block time in seconds since epoch (Jan 1 1970 GMT)\n"
             "  \"mutable\" : [                      (array of string) list of ways the block template may be changed \n"