Correct ec2_vol doc errors
check_mode is a module property
Merge pull request #2116 from lwade/devel

Correct ec2_vol doc errors
Fixed remove_key
Merge pull request #2123 from lessmian/devel

Fixed remove_key
uri doc fixes
Merge pull request #2127 from romeotheriault/uri-doc-fixes

uri module doc fixes
Rewrite best practices section.