Fix helm chart publishing (#66)

Author: josephsirak

.github/workflows/publish_helm_charts.yml

@@ -29,6 +29,6 @@ jobs:
     - name: Run chart-releaser
       uses: helm/[email protected]
       with:
-        charts_dir: charts/metaflow
+        charts_dir: charts/metaflow/charts
       env:
         CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"