Merge pull request #6743 from albert-github/feature/bug_stl_unordered

STL_Extension Documentation permanent redirects

Author: sloriot

STL_Extension/doc/STL_Extension/Concepts/Hashable.h

@@ -12,8 +12,8 @@ of the `graph_traits` header files provided by \cgal.
 They can be disables by defining the macro `CGAL_DISABLE_HASH_OPENMESH`.
 
 \sa `CGAL::Unique_hash_map<Key,Mapped,Hash>`
-\sa <A HREF="http://www.cplusplus.com/reference/unordered_set/unordered_set/">`std::unordered_set`</a>
-\sa <A HREF="http://www.cplusplus.com/reference/unordered_set/unordered_map/">`std::unordered_map`</a>
+\sa <A HREF="https://en.cppreference.com/w/cpp/container/unordered_set">`std::unordered_set`</a>
+\sa <A HREF="https://en.cppreference.com/w/cpp/container/unordered_map">`std::unordered_map`</a>
 \sa <A HREF="https://www.boost.org/doc/libs/release/doc/html/boost/unordered_set.html">`boost::unordered_set`</a>
 \sa <A HREF="https://www.boost.org/doc/libs/release/doc/html/boost/unordered_map.html">`boost::unordered_map`</a>