Fix markup error and minor consistency nit.
diff --git a/Doc/lib/libsys.tex b/Doc/lib/libsys.tex
index ac28e6f..8d9d022 100644
--- a/Doc/lib/libsys.tex
+++ b/Doc/lib/libsys.tex
@@ -152,7 +152,7 @@
Return the current value of the recursion limit, the maximum depth of
the Python interpreter stack. This limit prevents infinite recursion
from causing an overflow of the C stack and crashing Python. It can
-be set by \function{setrecursionlimit}.
+be set by \function{setrecursionlimit()}.
\end{funcdesc}
\begin{datadesc}{hexversion}
@@ -291,7 +291,7 @@
set the limit higher when she has a program that requires deep
recursion and a platform that supports a higher limit. This should be
done with care, because a too-high limit can lead to a crash.
-\edn{funcdesc}
+\end{funcdesc}
\begin{funcdesc}{settrace}{tracefunc}
Set the system's trace function, which allows you to implement a