Clients can choose which history visibility options they offer to users when creating rooms (#2072)

Signed-off-by: Johannes Marbach <n0-0ne+github@mailbox.org>

changelogs/client_server/newsfragments/2072.clarification

@@ -0,0 +1 @@
+Clients can choose which history visibility options they offer to users when creating rooms.

content/client-server-api/modules/history_visibility.md

@@ -43,11 +43,8 @@ setting at that time was more restrictive.
 
 #### Client behaviour
 
-Clients that implement this module MUST present to the user the possible
+Clients may want to display a notice that events may be read by
-options for setting history visibility when creating a room.
+non-joined people if the history visibility is set to `world_readable`.
-
-Clients may want to display a notice that their events may be read by
-non-joined people if the value is set to `world_readable`.
 
 #### Server behaviour