Fix encoding name.
diff --git a/Doc/library/codecs.rst b/Doc/library/codecs.rst
index 589fa0f..072b19c 100644
--- a/Doc/library/codecs.rst
+++ b/Doc/library/codecs.rst
@@ -960,7 +960,7 @@
 +-----------------+--------------------------------+--------------------------------+
 | cp1255          | windows-1255                   | Hebrew                         |
 +-----------------+--------------------------------+--------------------------------+
-| cp1256          | windows1256                    | Arabic                         |
+| cp1256          | windows-1256                   | Arabic                         |
 +-----------------+--------------------------------+--------------------------------+
 | cp1257          | windows-1257                   | Baltic languages               |
 +-----------------+--------------------------------+--------------------------------+