[set.intersection] Fixed transcription errors in return types.

Declaration error corresponds to 3dcc932.

The errors in the Returns: follow.

Author: tkoeppe

source/algorithms.tex

@@ -10664,7 +10664,7 @@
          @\libconcept{random_access_iterator}@ O, @\libconcept{sized_sentinel_for}@<O> OutS, class Comp = ranges::less,
          class Proj1 = identity, class Proj2 = identity>
   requires @\libconcept{mergeable}@<I1, I2, O, Comp, Proj1, Proj2>
-  ranges::set_difference_result<I1, I2, O>
+  ranges::set_difference_result<I1, O>
     ranges::set_difference(Ep&& exec, I1 first1, S1 last1,
                            I2 first2, S2 last2, O result, OutS result_last,
                            Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});
@@ -10673,8 +10673,7 @@
          class Proj1 = identity, class Proj2 = identity>
   requires @\libconcept{mergeable}@<iterator_t<R1>, iterator_t<R2>, iterator_t<OutR>,
                     Comp, Proj1, Proj2>
-  ranges::set_difference_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>,
-                                borrowed_iterator_t<OutR>>
+  ranges::set_difference_result<borrowed_iterator_t<R1>, borrowed_iterator_t<OutR>>
     ranges::set_difference(Ep&& exec, R1&& r1, R2&& r2, OutR&& result_r, Comp comp = {},
                            Proj1 proj1 = {}, Proj2 proj2 = {});
 \end{itemdecl}
@@ -10717,14 +10716,14 @@
   \tcode{result_last}
   for the overloads in namespace \tcode{std}.
 \item
-  \tcode{\{last1, last2, result + $N$\}}
+  \tcode{\{last1, result + $N$\}}
   for the overloads in namespace \tcode{ranges},
   if $N$ is equal to $M$.
 \item
-  Otherwise, \tcode{\{j1, j2, result_last\}}
+  Otherwise, \tcode{\{j1, result_last\}}
   for the overloads in namespace \tcode{ranges},
-  where the iterators \tcode{j1} and \tcode{j2}
-  point to positions past the last copied or skipped elements
+  where the iterator \tcode{j1}
+  points to positions past the last copied or skipped elements
   in \range{first1}{last1} and \range{first2}{last2}, respectively.
 \end{itemize}