fix spelling of advertise in src and doc

doc/tor.md

@@ -52,7 +52,7 @@ your bitcoind's P2P listen port (8333 by default).
 	                this option, and this can be a .onion address. Given the above
 	                configuration, you can find your onion address in
 	                /var/lib/tor/bitcoin-service/hostname. Onion addresses are given
-	                preference for your node to advertize itself with, for connections
+	                preference for your node to advertise itself with, for connections
 	                coming from unroutable addresses (such as 127.0.0.1, where the
 	                Tor proxy typically runs).