Update changelog.txt

Co-authored-by: Bas Alberts <13686387+anticomputer@users.noreply.github.com>

changelog.txt

@@ -10,9 +10,6 @@
   * Fixed strict prototype clang warning (#310)
   * Fixed regression test (#312)
   
-  Note: these changes remove redundant bold tag nesting which may result
-  in existing rendering tests failing, e.g. rendering "____bold____" to html
-  will no longer yield "<p><strong><strong>bold</strong></strong></p>".
   
 [0.29.0.gfm.10]