SET_LINE_NO ==> SET_LINENO

Reported by Corran Webster <cwebster@math.tamu.edu>.

Doc/lib/libdis.tex

@@ -480,7 +480,7 @@ Stores TOS into the local \code{co_varnames[\var{var_num}]}.
 Deletes local \code{co_varnames[\var{var_num}]}.
 \end{opcodedesc}
 
-\begin{opcodedesc}{SET_LINE_NO}{lineno}
+\begin{opcodedesc}{SET_LINENO}{lineno}
 Sets the current line number to \var{lineno}.
 \end{opcodedesc}