Fix minor LaTeX bug of not ending a \NULL{} with the curly braces to get the
spacing correct in the output.
diff --git a/Doc/api/abstract.tex b/Doc/api/abstract.tex
index 977a17a..c5aee66 100644
--- a/Doc/api/abstract.tex
+++ b/Doc/api/abstract.tex
@@ -831,7 +831,7 @@
\end{cfuncdesc}
\begin{cfuncdesc}{PyObject*}{PySequence_ITEM}{PyObject *o, int i}
- Return the \var{i}th element of \var{o} or \NULL on failure.
+ Return the \var{i}th element of \var{o} or \NULL{} on failure.
Macro form of \cfunction{PySequence_GetItem()} but without checking
that \cfunction{PySequence_Check(\var{o})} is true and without
adjustment for negative indices.