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/txoutproof.cpp

@@ -22,8 +22,9 @@ using node::GetTransaction;
 
 static RPCHelpMan gettxoutproof()
 {
-    return RPCHelpMan{"gettxoutproof",
-        "\nReturns a hex-encoded proof that \"txid\" was included in a block.\n"
+    return RPCHelpMan{
+        "gettxoutproof",
+        "Returns a hex-encoded proof that \"txid\" was included in a block.\n"
         "\nNOTE: By default this function only works sometimes. This is when there is an\n"
         "unspent output in the utxo for this transaction. To make it always work,\n"
         "you need to maintain a transaction index, using the -txindex command line option or\n"
@@ -127,8 +128,9 @@ static RPCHelpMan gettxoutproof()
 
 static RPCHelpMan verifytxoutproof()
 {
-    return RPCHelpMan{"verifytxoutproof",
-        "\nVerifies that a proof points to a transaction in a block, returning the transaction it commits to\n"
+    return RPCHelpMan{
+        "verifytxoutproof",
+        "Verifies that a proof points to a transaction in a block, returning the transaction it commits to\n"
         "and throwing an RPC error if the block is not in our best chain\n",
         {
             {"proof", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex-encoded proof generated by gettxoutproof"},