Fix typo in more-morphisms

THanks to nkym
https://stacks.math.columbia.edu/tag/03GV#comment-7687

more-morphisms.tex

@@ -5285,7 +5285,7 @@ \section{Normalization revisited}
 Observe that $X_2'$ is the relative spectrum of the integral closure
 of $\mathcal{O}_{X_2}$ in $f_{2, *}\mathcal{O}_{Y_2}$.
 If $\mathcal{A}' \subset f_{1, *}\mathcal{O}_{Y_1}$ denotes the integral
-closure of $\mathcal{O}_{X_2}$, then $X_2 \times_{X_1} X_1'$ is the
+closure of $\mathcal{O}_{X_1}$, then $X_2 \times_{X_1} X_1'$ is the
 relative spectrum of $\varphi^*\mathcal{A}'$, see
 Constructions, Lemma \ref{constructions-lemma-spec-properties}.
 By