Fixes #188 ("Build fails when RTTI is disabled")

doc/container.qbk

@@ -1338,6 +1338,13 @@ use [*Boost.Container]? There are several reasons for that:
 
 [section:release_notes Release Notes]
 
+[section:release_notes_boost_1_78_00 Boost 1.78 Release]
+
+* Fixed bugs/issues:
+   * [@https://github.com/boostorg/container/issues/188    GitHub #188: ['"Build fails when RTTI is disabled"]].
+
+[endsect]
+
 [section:release_notes_boost_1_77_00 Boost 1.77 Release]
 
 * Fixed bugs/issues: