fix(stokes): wrong index of boundary

tex/diffgeo/stokes.tex

@@ -320,9 +320,9 @@ \section{Boundaries}
 	For each $i = 1,\dots,k$ define $(k-1)$-chains by
 	\begin{align*}
 		c_i^{\text{start}} \colon (t_1, \dots, t_{k-1}) &\mapsto
-			c(t_1, \dots, t_{i-1}, 0, t_i, \dots, t_k) \\
+			c(t_1, \dots, t_{i-1}, 0, t_i, \dots, t_{k-1}) \\
 		c_i^{\text{stop}} \colon (t_1, \dots, t_{k-1}) & \mapsto
-			c(t_1, \dots, t_{i-1}, 1, t_i, \dots, t_k).
+			c(t_1, \dots, t_{i-1}, 1, t_i, \dots, t_{k-1}).
 	\end{align*}
 	Then
 	\[ \partial c \defeq