fixed comment about [not] deleting wxConfig::Get() pointer

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12693 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/config.tex

@@ -86,10 +86,10 @@ instead of creating and deleting the local config objects each time you need
 one (especially because creating a wxFileConfig object might be a time
 consuming operation). In this case, you may create this global config object
 in the very start of the program and {\it Set()} it as the default. Then, from
-anywhere in your program, you may access it using the {\it Get()} function. Of
-course, you should delete it on the program termination (otherwise, not only a
-memory leak will result, but even more importantly the changes won't be
-written back!).
+anywhere in your program, you may access it using the {\it Get()} function.
+Note that wxWindows will delete this config object for you during the program
+shutdown (from \helpref{wxApp::OnExit}{wxapponexit} to be precise) but you can
+also do it yourself earlier if needed.
 
 As it happens, you may even further simplify the procedure described above:
 you may forget about calling {\it Set()}. When {\it Get()} is called and there