HPCC-8954 Change to Spray Delim.

Fix HPCC-8954 Change to Spray Delim.
In ECLWatch change the link/page from
the recently renamed SpraY Variable to
Spray Delimited, in all docs and all images.

Signed-off-by: g-pan <greg.panagiotatos@lexisnexis.com>
Merge pull request #4289 from g-pan/H8954-2-SprayDelim

HPCC-8954 Change to Spray Delim.

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>