documentation

[ZBX-22800] restored userdirectory sorting by name; removed unsupported field host from sorting

Merge in WEB/documentation from feature/ZBX-22800-6.4-D to release/6.4

* commit 'e88fd7fe3b073a5b3066145efd4ecb50d7fd01ea':
  [ZBX-22800] updated fix version
  A......... [ZBX-22800] updated documentation 6.4