If you don't want the text to be edited, just put it on Home.

If you don't want others to edit your writing, put it where others cannot edit it

Therefore, anything placed in a shared place is considered to have been allowed to be edited by others.

If you are dissatisfied with the edits after they have been made, you may of course express

We may revert to the original wording as a result of the discussion.

But that is done after the fact of the "edit", not before it is forbidden.

---