fix typo in t6

Tutorials/T06-A1SolnMidReview/T6.tex

@@ -128,7 +128,7 @@ McMaster University\\ }
 	\item Behaviour of \texttt{SeqT.indexInSeq(v)}: if \texttt{s.get(i) $\leq$ v $\leq$ s.get(i+1)} is not saftisfied, what should it return?
 	\item Will \texttt{linVal(x)} equal \texttt{npolyVal(n, x)} for the same x value? Why or why not?
 	\begin{itemize}
-		\item \texttt{linVal} is linear inteploration between 2 points whereaas \texttt{npolyVal(n, x)} is regression for all points
+		\item \texttt{linVal} is linear inteploration between 2 points whereas \texttt{npolyVal(n, x)} is regression for all points
 	\end{itemize}
 \end{enumerate}
 \end{frame}