small change

Packages/Arrangement_2/doc_tex/Sweep_line_2_ref/do_curves_intersect.tex

@@ -10,7 +10,7 @@ bool do_curves_intersect (InputIterator curves_begin,
                           Traits& traits);}
 {given a range of curves, check whether there is at least one pair of curves
  that intersect in their interior. The function returns \ccc{true} if such
- a pair is found, and \ccc{false} if the curves are pairwise disjoint in
+ a pair is found, and \ccc{false} if all curves are pairwise disjoint in
  their interior.The \ccc{Traits} type must be a model
  of the \ccc{ArrangementTraits_2} concept, such that the value-type of
  \ccc{InputIterator} is \ccc{Traits::Curve_2}.}