Fix typo

Thanks to H
http://stacks.math.columbia.edu/tag/05WH#comment-1451

examples.tex

@@ -1779,7 +1779,7 @@ \section{A projective module which is not locally free}
 = \lim_n \Hom_R(e_nR, M) = \lim_n e_nM
 $$
 Note that the transition maps $e_{n + 1}M \to e_nM$ are given
-by multiplication by $e_n$ are are surjective. Hence by
+by multiplication by $e_n$ and are surjective. Hence by
 Algebra, Lemma \ref{algebra-lemma-ML-exact-sequence}
 the functor $\Hom_R(I, M)$ is exact, i.e., $I$ is a projective
 $R$-module.