removed extra space in site_taca_sarek_wes_delivery.yml.j2

[alvaannett]

Extra space in line 37 gave following error:

File "/lupus/ngi/production/v1.27/sw/anaconda/envs/NGI/lib/python2.7/site-packages/yaml/parser.py", line 393, in parse_block_sequence_entry
    "expected <block end>, but found %r" % token.id, token.start_mark)
yaml.parser.ParserError: while parsing a block collection
  in "/lupus/ngi/production/latest/conf/TACA/upps_taca_sarek_wes_delivery.yml", line 12, column 9
expected <block end>, but found '<block sequence start>'

[alvaannett]

Sorry my mistake! :)