* Add missing PyUnicode_Append() doc * Change the copied content * Add '`` ``' * Change doc * Add PyUnicode_AppendAndDel function doc * Change doc * Add PyUnicode_AppendAndDel to refcounts * Change doc * Change doc Co-authored-by: Petr Viktorin <encukou@gmail.com> * Change doc --------- Co-authored-by: Petr Viktorin <encukou@gmail.com>