bpo-41482: Fix error in ipaddress.IPv4Network docstring (GH-21736)

diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
index 75b4c35..bc662c4 100644
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -1466,7 +1466,7 @@
             address: A string or integer representing the IP [& network].
               '192.0.2.0/24'
               '192.0.2.0/255.255.255.0'
-              '192.0.0.2/0.0.0.255'
+              '192.0.2.0/0.0.0.255'
               are all functionally the same in IPv4. Similarly,
               '192.0.2.1'
               '192.0.2.1/255.255.255.255'