tests/test-gendoc-sv.t

tests: rename and document test-command-template.t

So that we can specify templater tests as test-template-*.

  (original)
  $ wc -l test-command-template.t test-template-*
  5041 test-command-template.t
    23 test-template-filters.t
  5064 total

  (at this patch)
  $ wc -l test-template-*
  1088 test-template-basic.t
  1376 test-template-functions.t
  1195 test-template-keywords.t
  1760 test-template-map.t
  5419 total

#require docutils gettext

  $ $TESTDIR/check-gendoc sv
  checking for parse errors