UNARY_NEG is supposed to be UNARY_NEGATIVE (spotted by Charles Waldman
<cgw@fnal.gov>).
Fix minor problem with EXTENDED_ARG description markup..
diff --git a/Doc/lib/libdis.tex b/Doc/lib/libdis.tex
index 593daca..9d709ac 100644
--- a/Doc/lib/libdis.tex
+++ b/Doc/lib/libdis.tex
@@ -146,7 +146,7 @@
Implements \code{TOS = +TOS}.
\end{opcodedesc}
-\begin{opcodedesc}{UNARY_NEG}{}
+\begin{opcodedesc}{UNARY_NEGATIVE}{}
Implements \code{TOS = -TOS}.
\end{opcodedesc}
@@ -595,7 +595,7 @@
Prefixes any opcode which has an argument too big to fit into the
default two bytes. \var{ext} holds two additional bytes which, taken
together with the subsequent opcode's argument, comprise a four-byte
-argument, \var {ext} being the two most-significant bytes.
+argument, \var{ext} being the two most-significant bytes.
\end{opcodedesc}
\begin{opcodedesc}{CALL_FUNCTION_VAR}{argc}