Modify A2: Add missing access routine argument

The table describing exported access programs lists an argument that was
not included in its signature under semantics.

Assignments/A2/A2.tex

@@ -344,7 +344,7 @@ interpolation to select index values outside of where the function is defined.
 
 \subsubsection* {Access Routine Semantics}
 
-\noindent new CurveT($X, Y$):
+\noindent new CurveT($X, Y, i$):
 \begin{itemize}
 \item transition: $\mbox{minx}, \mbox{maxx}, o, f := X_0, X_{|X|-1}, i, (\lambda v:
   \mbox{interp}(X, Y, o, v))$