Help: Clarify 3.14 release note about object library dependencies

Revise the note from commit bab24e782c (target_link_libraries: Propagate
dependencies of object libraries, 2018-12-10, v3.14.0-rc1~260^2).

Help/release/3.14.rst

@@ -310,8 +310,8 @@ Deprecated and Removed Features
 Other Changes
 =============
 
-* Object library linking has been fixed to propagate transitive link
-  dependencies of object libraries to consuming targets.
+* Object library linking has been fixed to propagate private link libraries
+  of object libraries to consuming targets.
 
 * Install rules under :command:`add_subdirectory` now interleave with those in
   the calling directory. See policy :policy:`CMP0082` for details.