spec: ONLY axes of type array in arraycoordinate systems

Author: jo-mueller

index.md

@@ -1308,7 +1308,7 @@ The `axes` MUST contain either of:
 - 2 or 3 entries of `type:space`
   and MAY contain one additional entry of `type:time`
   and MAY contain one additional entry of `type:channel` or a null / custom type.
-- 2 or more entries of type `array` (see [array coordinate systems](#array-coordinate-systems-md)).
+- only entries of type `array` (see [array coordinate systems](#array-coordinate-systems-md)).
 In addition, the entries MUST be ordered by `type` where the `time` axis must come first (if present),
 followed by the  `channel` or custom axis (if present) and the axes of type `space`.
 If there are three spatial axes where two correspond to the image plane (`yx`)