Fix markup nit pointed out by FLD
diff --git a/Doc/whatsnew/whatsnew21.tex b/Doc/whatsnew/whatsnew21.tex
index 283f7fe..d5577f9 100644
--- a/Doc/whatsnew/whatsnew21.tex
+++ b/Doc/whatsnew/whatsnew21.tex
@@ -611,7 +611,7 @@
memory overhead. The allocator uses C's \function{malloc()} function
to get large pools of memory, and then fulfills smaller memory
requests from these pools. It can be enabled by providing the
-"--with-pymalloc" option to the \file{configure} script; see
+\longprogramopt{--with-pymalloc} option to the \program{configure} script; see
\file{Objects/obmalloc.c} for the implementation details.
Contributed by Vladimir Marangozov.