Mark booleans as required. Remove mention that things may be null

api/client-server/list_public_rooms.yaml

@@ -67,7 +67,11 @@ paths:
                 items:
                   type: object
                   title: "PublicRoomsChunk"
-                  required: ["room_id"]
+                  required:
+                    - room_id
+                    - num_joined_users
+                    - world_readable
+                    - guest_can_join
                   properties:
                     aliases:
                       type: array
@@ -78,11 +82,11 @@ paths:
                     canonical_alias:
                       type: string
                       description: |-
-                        The canonical alias of the room, if any. May be null.
+                        The canonical alias of the room, if any.
                     name:
                       type: string
                       description: |-
-                        The name of the room, if any. May be null.
+                        The name of the room, if any.
                     num_joined_members:
                       type: number
                       description: |-
@@ -94,7 +98,7 @@ paths:
                     topic:
                       type: string
                       description: |-
-                        The topic of the room, if any. May be null.
+                        The topic of the room, if any.
                     world_readable:
                       type: boolean
                       description: |-