Remove trailing whitespace.
diff --git a/Doc/c-api/sequence.rst b/Doc/c-api/sequence.rst
index 0ebc0f3..51f9a7d 100644
--- a/Doc/c-api/sequence.rst
+++ b/Doc/c-api/sequence.rst
@@ -143,9 +143,9 @@
 
    Return the underlying array of PyObject pointers.  Assumes that *o* was returned
    by :cfunc:`PySequence_Fast` and *o* is not *NULL*.
-   
+
    Note, if a list gets resized, the reallocation may relocate the items array.
-   So, only use the underlying array pointer in contexts where the sequence 
+   So, only use the underlying array pointer in contexts where the sequence
    cannot change.