Issue #28763: Use double hyphens (rendered as en-dashes) in numerical ranges
in the documentation.
diff --git a/Doc/faq/design.rst b/Doc/faq/design.rst
index 1e523d4..0a8cfdd 100644
--- a/Doc/faq/design.rst
+++ b/Doc/faq/design.rst
@@ -31,7 +31,7 @@
Many coding styles place begin/end brackets on a line by themselves. This makes
programs considerably longer and wastes valuable screen space, making it harder
to get a good overview of a program. Ideally, a function should fit on one
-screen (say, 20-30 lines). 20 lines of Python can do a lot more work than 20
+screen (say, 20--30 lines). 20 lines of Python can do a lot more work than 20
lines of C. This is not solely due to the lack of begin/end brackets -- the
lack of declarations and the high-level data types are also responsible -- but
the indentation-based syntax certainly helps.