Fix Select.md
Fix Select.md

fixing errors from porting over PR in old repo. 
Commit this fixes: https://github.com/pivotal-cf/pui-styleguide/commit/6cfe5cd37cb3700c2db8a694eeaba98ce7e327cc
pivotal-cf/pivotal-ui,pivotal-cf/pivotal-ui,pivotal-cf/pivotal-ui