docs: fix lnd w/ bitcoind backend example command

sample-lnd.conf

@@ -208,8 +208,8 @@ bitcoin.node=btcd
 ; ZMQ socket which sends rawblock and rawtx notifications from bitcoind. By
 ; default, lnd will attempt to automatically obtain this information, so this
 ; likely won't need to be set (other than for a remote bitcoind instance).
-; bitcoind.zmqblockhost=tcp://127.0.0.1:28332
-; bitcoind.zmqtxhost=tcp://127.0.0.1:28333
+; bitcoind.zmqpubrawblock=tcp://127.0.0.1:28332
+; bitcoind.zmqpubrawtx=tcp://127.0.0.1:28333
 
 
 [neutrino]
@@ -286,8 +286,8 @@ litecoin.node=ltcd
 ; ZMQ socket which sends rawblock and rawtx notifications from litecoind. By
 ; default, lnd will attempt to automatically obtain this information, so this
 ; likely won't need to be set (other than for a remote litecoind instance).
-; litecoind.zmqblockhost=tcp://127.0.0.1:28332
-; litecoind.zmqtxhost=tcp://127.0.0.1:28333
+; litecoind.zmqpubrawblock=tcp://127.0.0.1:28332
+; litecoind.zmqpubrawtx=tcp://127.0.0.1:28333
 
 
 [autopilot]