Answer on non-recursive flatmap incorrect

[joshcds]

cqf-exercises/input/cql/Exercises04Key.cql

Line 238 in 59dd08f

= { 1, 2, 3, { 'a', 'b' }, 'x', 'y' }

Currently looks like:
= { 1, 2, 3, { 'a', 'b' }, 'x', 'y' }

Think it should be:
= { 1, 2, 3, { 'a', 'b' }, {'x', 'y'} }

@brynrhodes

[brynrhodes]

Fixed, thank you!