Fix the broken sample path in API (#1805)
Fix the broken sample path in API (#1805)

* Fix the broken sample path in API

Related change https://github.com/kubeflow/pipelines/commit/b476a848d9894acc6212a88fcecd8df06e0d3cf6

/hold
Need investigate why test doesn't catch it. 

/assign @numerology @hongye-sun

* Update sample_config.json

kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines