tests/test-gendoc-zh_TW.t

crecord: use raw string for regular expression

\s emits a SyntaxWarning in Python 3.8. Use a raw string to
avoid escaping the \.

Differential Revision: https://phab.mercurial-scm.org/D5819

#require docutils gettext

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