Remove trailing whitespace.
diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst
index bf367d8..6b80ad6 100644
--- a/Doc/c-api/buffer.rst
+++ b/Doc/c-api/buffer.rst
@@ -30,7 +30,7 @@
 
 .. index:: single: PyBufferProcs
 
-More information on the buffer interface is provided in the section 
+More information on the buffer interface is provided in the section
 :ref:`buffer-structs`, under the description for :ctype:`PyBufferProcs`.
 
 A "buffer object" is defined in the :file:`bufferobject.h` header (included by