Typo in How much gold problem description
There are mistakes in ""the gold and tin proportion id 1/2""
'is' instead of 'id'
URL from: http://www.checkio.org/mission/how-much-gold/
HTTP_USER_AGENT: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.114 Safari/537.36
'is' instead of 'id'
URL from: http://www.checkio.org/mission/how-much-gold/
HTTP_USER_AGENT: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.114 Safari/537.36
