Update changes file for several PRs
- PR #7169 : Editable div elements in Chrome are no longer have their label reported as their value while in browse mode. (Issue #7153)
- PR #6396 : An unbound gesture (script_restart) has been added to allow NVDA to be restarted quickly. (PR #6396)
- PR #6777 : A Braille setting has been added to "show messages indefinitely". (Issue #6669)
- PR #7133 : Pressing end while in browse mode of an empty Microsoft Word document no longer causes a runtime error. (Issue #7009)
- PR #6868 : The keyboard layout can now be set from the NVDA Welcome dialog. (Issue #6863)
- PR #6813 : The names of "landmarks" are abbreviated in Braille (Issue #3975)
