Add a comma (,), period(.) or any other character at the end of each row in Notepad ++, from a column of elements.
Addign a character in any position of a column in Notepad ++ is very easy. Just put the cursor of the mouse in the desired position, and holding Ctrl+Alt, drag de cursor down, until you reach the end of the column.
That is: Select cursor -> Hold Ctrl+Alt -> Drag mouse down