Spelling fixes

Spelling errors found using github.com/lucasdemarchi/codespell
A tool to fix common misspellings.
This tool is licensed under GNU General Public License, version 2.

Change-Id: I562cc5b407fb2a3a728c6167aaab75acde3adfca
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>