Update a few places that still mention zcash-cli with hush-cli

src/bitcoin-cli.cpp

@@ -72,9 +72,9 @@ static bool AppInitRPC(int argc, char* argv[])
         std::string strUsage = _("Zcash RPC client version") + " " + FormatFullVersion() + "\n" + PrivacyInfo();
         if (!mapArgs.count("-version")) {
             strUsage += "\n" + _("Usage:") + "\n" +
-                  "  zcash-cli [options] <command> [params]  " + _("Send command to Zcash") + "\n" +
-                  "  zcash-cli [options] help                " + _("List commands") + "\n" +
-                  "  zcash-cli [options] help <command>      " + _("Get help for a command") + "\n";
+                  "  hush-cli [options] <command> [params]  " + _("Send command to Zcash") + "\n" +
+                  "  hush-cli [options] help                " + _("List commands") + "\n" +
+                  "  hush-cli [options] help <command>      " + _("Get help for a command") + "\n";
 
             strUsage += "\n" + HelpMessageCli();
         } else {

src/rpcserver.cpp

@@ -581,7 +581,7 @@ UniValue CRPCTable::execute(const std::string &strMethod, const UniValue &params
 
 std::string HelpExampleCli(const std::string& methodname, const std::string& args)
 {
-    return "> zcash-cli " + methodname + " " + args + "\n";
+    return "> hush-cli " + methodname + " " + args + "\n";
 }
 
 std::string HelpExampleRpc(const std::string& methodname, const std::string& args)