Bug: docker image not include tag

[waynerv]

for example gcr.io/kubebuilder/kube-rbac-proxy:v0.13.1 will only match gcr.io/kubebuilder/kube-rbac-proxy, in most cases image should work with tag.

also I found the hint did't start with first character in some case:

❯ echo gcr.io/kubebuilder/kube-rbac-proxy:v0.13.1
gcr.io/kubebuilder/kube-rbac-proxy:v0.13.1

after enable hint:

❯ echo gcecr.io/kubebuilder/kube-rbac-proxy0.13.1
wcr.io/kubebuilder/kube-rbac-proxy:v0.13.1

second line works correctly(wcr), the hint in first line is wrong (gcecr) however it will copy the right words.