Remove extra 'the'; the following title includes it
diff --git a/Doc/library/index.rst b/Doc/library/index.rst
index 145d16a..657011a 100644
--- a/Doc/library/index.rst
+++ b/Doc/library/index.rst
@@ -7,7 +7,7 @@
:Release: |version|
:Date: |today|
-While the :ref:`reference-index` describes the exact syntax and
+While :ref:`reference-index` describes the exact syntax and
semantics of the Python language, this library reference manual
describes the standard library that is distributed with Python. It also
describes some of the optional components that are commonly included