fix docker images -tree <invalid_image> and docker images -viz <image_name>
fix size in -tree
Minor spelling fix
Small typo fixes
Merge pull request #3145 from vieux/fix_docker_images

multiple fixed in docker images
Merge pull request #3189 from aknikitin/patch-1

Minor spelling fix
Merge pull request #3190 from zain/master

Small typo fixes