Deprecate mb_overload strings (#54)

* Deprecate mb_overload strings

* Moved to correct version

---------

Co-authored-by: Harald Leithner <[email protected]>

Author: Hackwar

migrations/44-50/new-deprecations.md

@@ -3,10 +3,13 @@ sidebar_position: 2
 ---
 
 New deprecations
-===============
+================
 All the new deprecations that should be aware of and what you should now be using instead.
-:::caution TODO
 
-This page is unfinished, please use the **Edit this Page** link at the bottom of this page to help make it more useful.
+# Language strings
 
-:::
+File: administrator/language/en-GB/com_joomlaupdate.ini  
+Strings: INSTL_MB_STRING_OVERLOAD_OFF, INSTL_NOTICEMBSTRINGOVERLOAD
+
+File: installation/language/en-GB/joomla.ini  
+Strings: INSTL_MB_STRING_OVERLOAD_OFF, INSTL_NOTICE_MBSTRING_OVERLOAD_OFF