Update unchecked_emplace_back changelog with static_vector

Author: igaztanaga

doc/container.qbk

@@ -1467,8 +1467,8 @@ collect them containers and build [*Boost.Container], a library targeted to a wi
 * Fixed bugs/issues:
    * [@https://github.com/boostorg/container/issues/334 GitHub #334: ['"Wrong overload resolution protection in implementation of P2363R5"]].
 
-* Added [memberref boost::container::vector::unchecked_emplace_back unchecked_emplace_back] to [classref boost::container::vector vector]
-   and [classref boost::container::small_vector small_vector].
+* Added [memberref boost::container::vector::unchecked_emplace_back unchecked_emplace_back] to [classref boost::container::vector vector],
+   [classref boost::container::static_vector static_vector] and [classref boost::container::small_vector small_vector].
 
 [endsect]