Tweak changes file

changes/ticket29537

@@ -1,3 +1,3 @@
   o Testing:
-    - Check that all valid values of `int` and `unsigned int` can be
-      represented by `void *`. Resolves issue 29537.
+    - Check that representative subsets of values of `int` and `unsigned int`
+      can be represented by `void *`. Resolves issue 29537.