HPCC-9623 WsEcl xml test message shouldn't close tag prematurely

In generated WsECl test soap messages the root tag of an array
element ends up being closed twice, resulting in an extraneous '>'
character.  It is usually harmless but confusing as these messages
are supposed to demonstrate how to correctly format requests.

Signed-off-by: Anthony Fishbeck <anthony.fishbeck@lexisnexis.com>