message: add placeholder text for container image
diff: @@ -174,7 +174,9 @@ const ImageSearch: React.FC = () => {
  ref={inputRef}
  type={TextInputTypes.text}
  name="searchTerm"
  - placeholder={t('devconsole~Enter an Image name')}
  + placeholder={t(
  + 'devconsole~docker.io/openshift/hello-openshift or quay.io/<username>/<image-name>',
  + )}
  helpText={getHelpText()}
  helpTextInvalid={helpTextInvalid}
  validated={validated}
  