Fix markup.
diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst
index c204075..7b718e8 100644
--- a/Doc/tutorial/datastructures.rst
+++ b/Doc/tutorial/datastructures.rst
@@ -365,9 +365,9 @@
eliminating duplicate entries. Set objects also support mathematical operations
like union, intersection, difference, and symmetric difference.
-Curly braces or the :func:`set` function can be use to create sets. Note:
-To create an empty set you have to use set(), not {}; the latter creates
-an empty dictionary, a data structure that we discuss in the next section.
+Curly braces or the :func:`set` function can be use to create sets. Note: To
+create an empty set you have to use ``set()``, not ``{}``; the latter creates an
+empty dictionary, a data structure that we discuss in the next section.
Here is a brief demonstration::