Comment on API/CollectionClass.md (20-R9)

[jeremy-french-4D]

Issue: [Function .flatMap()](https://developer.4d.com/docs/20-R9/API/CollectionClass#flatmap)

Two lines in Example 1 have syntax errors.

Each line's error is the absence of a closing right parenthesis.

The following line uses the map function as follows.

$result:=$col.map(Formula(New collection($1.value*2))

It should have an additional third parenthesis added at its end, as follows. Note the three parentheses at its end.

$result:=$col.map(Formula(New collection($1.value*2)))

And this line uses the flatMap function as follows.

$result:=$col.flatMap(Formula(New collection($1.value*2))

It, too, should have an additional third parenthesis added at its end, as follows. Note the three parentheses at its end.

$result:=$col.flatMap(Formula(New collection($1.value*2)))