example.py: queueFamilyIndices appears undefined (line 283) and typo in line 281

[sunbearc22]

In examply.py line, it writes
281 imageSharingMode = VK_SHARING_MODE_CONCURREN
283 pQueueFamilyIndices = queueFamilyIndices

Issues:

1. There is a typo in 281, letter 'T" is missing: it should be VK_SHARING_MODE_CONCURRENT
2. The term queueFamilyIndices appears to be undefined. I believe queueFamilyIndices = {queue_family_graphic_index, queue_family_present_index} should either appear in line 279 or 183.

[realitix]

Thanks, it's fixed