add 'dump' to cli help

one.cpp

@@ -140,6 +140,7 @@ static void cliPrintHelp(const char *pn,FILE *out)
 	fprintf(out,"  listmoons               - List moons (federated root sets)" ZT_EOL_S);
 	fprintf(out,"  orbit <world ID> <seed> - Join a moon via any member root" ZT_EOL_S);
 	fprintf(out,"  deorbit <world ID>      - Leave a moon" ZT_EOL_S);
+	fprintf(out,"  dump                    - Debug settings dump for support" ZT_EOL_S);
 	fprintf(out,ZT_EOL_S"Available settings:" ZT_EOL_S);
 	fprintf(out,"  Settings to use with [get/set] may include property names from " ZT_EOL_S);
 	fprintf(out,"  the JSON output of \"zerotier-cli -j listnetworks\". Additionally, " ZT_EOL_S);