Fix typo in duality.tex

duality.tex

@@ -3479,7 +3479,7 @@ \section{Right adjoint of pushforward in examples}
 \wedge^r\mathcal{N}[-r] \longrightarrow a(\mathcal{O}_Y)
 $$
 where
-$\mathcal{N} = \SheafHom_{\mathcal{O}_X}(\mathcal{C}_{Y/X}, \mathcal{O}_X)$
+$\mathcal{N} = \SheafHom_{\mathcal{O}_X}(\mathcal{C}_{X/Y}, \mathcal{O}_X)$
 is the normal sheaf of $i$
 (Morphisms, Section \ref{morphisms-section-conormal-sheaf})
 and $r$ is its rank viewed as a locally constant