fix indentation and surround recursion string with single quotes (#6532)
fix indentation and surround recursion string with single quotes (#6532)


codecombat/codecombat,javatlacati/codecombat,javatlacati/codecombat,codecombat/codecombat,codecombat/codecombat,codecombat/codecombat,javatlacati/codecombat,javatlacati/codecombat,javatlacati/codecombat,codecombat/codecombat