bpo-38539: Update demo files (GH-16890)

diff --git a/Tools/demo/README b/Tools/demo/README
index e914358..9fccb97 100644
--- a/Tools/demo/README
+++ b/Tools/demo/README
@@ -1,16 +1,16 @@
 This directory contains a collection of demonstration scripts for
 various aspects of Python programming.
 
-beer.py        Well-known programming example: Bottles of beer.
-eiffel.py      Python advanced magic: A metaclass for Eiffel post/preconditions.
-hanoi.py       Well-known programming example: Towers of Hanoi.
-life.py        Curses programming: Simple game-of-life.
-markov.py      Algorithms: Markov chain simulation.
-mcast.py       Network programming: Send and receive UDP multicast packets.
-queens.py      Well-known programming example: N-Queens problem.
-redemo.py      Regular Expressions: GUI script to test regexes.
-rpython.py     Network programming: Small client for remote code execution.
-rpythond.py    Network programming: Small server for remote code execution.
-sortvisu.py    GUI programming: Visualization of different sort algorithms.
-ss1.py         GUI/Application programming: A simple spreadsheet application.
-vector.py      Python basics: A vector class with demonstrating special methods.
\ No newline at end of file
+beer.py           Well-known programming example: Bottles of beer.
+eiffel.py         Python advanced magic: A metaclass for Eiffel post/preconditions.
+hanoi.py          Well-known programming example: Towers of Hanoi.
+life.py           Curses programming: Simple game-of-life.
+markov.py         Algorithms: Markov chain simulation.
+mcast.py          Network programming: Send and receive UDP multicast packets.
+queens.py         Well-known programming example: N-Queens problem.
+redemo.py         Regular Expressions: GUI script to test regexes.
+rpython.py        Network programming: Small client for remote code execution.
+rpythond.py       Network programming: Small server for remote code execution.
+sortvisu.py       GUI programming: Visualization of different sort algorithms.
+spreadsheet.py    GUI/Application programming: A simple spreadsheet application.
+vector.py         Python basics: A vector class demonstrating special methods.