Fix jq query

- should address the following error condition:
jq: error: count/0 is not defined at <top-level>, line 1:
.meta.total-count            
jq: 1 compile error
Argument "" isn't numeric in numeric gt (>) at /usr/local/bin/tfc-dump.pl line 165.

tfc-dump.pl

@@ -158,7 +158,7 @@
 
 # Get the number of Variable Sets
 
-$jq_cmd      = "cat $tmpfile | jq '.meta.total-count'";
+$jq_cmd      = "cat $tmpfile | jq '.meta.pagination[\"total-count\"]'";
 $total_count = `$jq_cmd`;
 unlink($tmpfile);