Update changes file for PR #6287, #6402, #6339
For PR #6287 - Various padding and alignment issues have been resolved. (#6317, #5548, #6342, #6343, #6349)
For PR #6402 - The document formatting dialog has been adjusted so that the contents scrolls. (#6348)
For PR #6339 - Adjusted the layout of the symbols pronunciation dialog so the full width of the dialog is used for the symbols list. (#6101)
