Doc fix: exception typo
Doc fix: exception typo

labelling this under [t:757]


gravitystorm/fifengine,cbeck88/fifengine,Niektory/fifengine,Niektory/fifengine,fifengine/fifengine,fifengine/fifengine,Niektory/fifengine,gravitystorm/fifengine,fifengine/fifengine,cbeck88/fifengine,cbeck88/fifengine,cbeck88/fifengine,gravitystorm/fifengine,gravitystorm/fifengine