bpo-33887: Add TOC to Design and History FAQ(GH-7766)

(cherry picked from commit 38cf49bf695903ac7a8516bca6bbb6b32d935bb5)

Co-authored-by: Andrés Delfino <adelfino@gmail.com>
diff --git a/Doc/faq/design.rst b/Doc/faq/design.rst
index 5d8f3a5..edc9c12 100644
--- a/Doc/faq/design.rst
+++ b/Doc/faq/design.rst
@@ -2,6 +2,11 @@
 Design and History FAQ
 ======================
 
+.. only:: html
+
+   .. contents::
+
+
 Why does Python use indentation for grouping of statements?
 -----------------------------------------------------------