Fixed misspellings of common words
Fixed misspellings of common words

Fixed misspelling of common words found by the misspellings tool.

Closes-Bug: #1257531

Change-Id: If77c1a98a978bbb6c300c423c3f293e4d6f7b15b

JioCloud/oslo.concurrency,openstack/oslo.concurrency,varunarya10/oslo.concurrency