Doc: Disable smartquotes for zh-tw translations.

JulienPalard · JulienPalard · commit 050c38b2537d · 2018-09-15T22:51:09.000+02:00
See: https://mail.python.org/pipermail/doc-sig/2018-August/004079.html and: python#4006
diff --git a/Doc/docutils.conf b/Doc/docutils.conf
@@ -1,2 +1,3 @@
 [restructuredtext parser]
 smartquotes-locales: ja: ""''
+                     zh-tw: ""''
