Change space's valid `order` range to 0x7E
0x7F is DEL, which is clearly not intended by the proposal text.
@@ -126,7 +126,7 @@ relationship can be expressed in one of two ways:
`origin_server_ts` of their `m.room.create` events, or ascending
lexicographic order of their `room_id`s in case of equal
`origin_server_ts`. `order`s which are not strings, or do not consist
- solely of ascii characters in the range `\x20` (space) to `\x7F` (`~`), or
+ solely of ascii characters in the range `\x20` (space) to `\x7E` (`~`), or
consist of more than 50 characters, are forbidden and the field should be
ignored if received.)
