Related to #3961

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#### Description <!-- Describe your changes in detail -->

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/3975

-- Commit Summary --

* dialog: Remove dlg_flag docs

-- File Changes --

M src/modules/dialog/dlg_handlers.c (2) M src/modules/dialog/doc/dialog_admin.xml (16)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/3975.patch https://github.com/kamailio/kamailio/pull/3975.diff