tests/test-gendoc-fr.t

tests: use NO_CHECK_EOF as heredoc limit mark to omit checking code fragments

This patch uses NO_CHECK_EOF as heredoc limit mark instead of EOF, in
order to avoid checking all python code fragments in
test-contrib-check-code.t, because almost all of them has
un-recommended implementations intentionally.

#require docutils gettext

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