[algorithms] Fix some bad indentation in itemdecls.

Author: zygoloid

source/algorithms.tex

@@ -3305,13 +3305,13 @@
   requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
   constexpr subrange<I1>
     ranges::find_end(I1 first1, S1 last1, I2 first2, S2 last2, Pred pred = {},
-             Proj1 proj1 = {}, Proj2 proj2 = {});
+                     Proj1 proj1 = {}, Proj2 proj2 = {});
 template<forward_range R1, forward_range R2,
          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
   requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
   constexpr safe_subrange_t<R1>
     ranges::find_end(R1&& r1, R2&& r2, Pred pred = {},
-             Proj1 proj1 = {}, Proj2 proj2 = {});
+                     Proj1 proj1 = {}, Proj2 proj2 = {});
 \end{itemdecl}
 
 \begin{itemdescr}
@@ -6767,7 +6767,7 @@
   requires indirectly_copyable<I, O1> && indirectly_copyable<I, O2>
   constexpr ranges::partition_copy_result<I, O1, O2>
     ranges::partition_copy(I first, S last, O1 out_true, O2 out_false, Pred pred,
-                   Proj proj = {});
+                           Proj proj = {});
 template<input_range R, weakly_incrementable O1, weakly_incrementable O2,
          class Proj = identity,
          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>