scripted-diff: Remove unused leading newline in RPC docs

-BEGIN VERIFY SCRIPT-
 perl -0777 -pi -e 's/RPCHelpMan{\s*("[^"]+"),\s*"\\n/RPCHelpMan{\n        \1,\n        "/g' $( git grep -l 'RPCHelpMan{' )
-END VERIFY SCRIPT-

src/rpc/node.cpp

@@ -35,8 +35,9 @@ using node::NodeContext;
 
 static RPCHelpMan setmocktime()
 {
-    return RPCHelpMan{"setmocktime",
-        "\nSet the local time to given timestamp (-regtest only)\n",
+    return RPCHelpMan{
+        "setmocktime",
+        "Set the local time to given timestamp (-regtest only)\n",
         {
             {"timestamp", RPCArg::Type::NUM, RPCArg::Optional::NO, UNIX_EPOCH_TIME + "\n"
              "Pass 0 to go back to using the system time."},
@@ -75,8 +76,9 @@ static RPCHelpMan setmocktime()
 
 static RPCHelpMan mockscheduler()
 {
-    return RPCHelpMan{"mockscheduler",
-        "\nBump the scheduler into the future (-regtest only)\n",
+    return RPCHelpMan{
+        "mockscheduler",
+        "Bump the scheduler into the future (-regtest only)\n",
         {
             {"delta_time", RPCArg::Type::NUM, RPCArg::Optional::NO, "Number of seconds to forward the scheduler into the future." },
         },
@@ -308,7 +310,7 @@ static RPCHelpMan echoipc()
 {
     return RPCHelpMan{
         "echoipc",
-        "\nEcho back the input argument, passing it through a spawned process in a multiprocess build.\n"
+        "Echo back the input argument, passing it through a spawned process in a multiprocess build.\n"
         "This command is for testing.\n",
         {{"arg", RPCArg::Type::STR, RPCArg::Optional::NO, "The string to echo",}},
         RPCResult{RPCResult::Type::STR, "echo", "The echoed string."},
@@ -356,8 +358,9 @@ static UniValue SummaryToJSON(const IndexSummary&& summary, std::string index_na
 
 static RPCHelpMan getindexinfo()
 {
-    return RPCHelpMan{"getindexinfo",
-                "\nReturns the status of one or all available indices currently running in the node.\n",
+    return RPCHelpMan{
+        "getindexinfo",
+        "Returns the status of one or all available indices currently running in the node.\n",
                 {
                     {"index_name", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "Filter results for an index with a specific name."},
                 },