message: Fix wrong filename mentioned in INSTALL.md
  INSTALL.md mentions Dockerfile.from_tarball, but it's actually Dockerfile.from_local_tarball
diff: @@ -18,6 +18,6 @@ under the License.
  -->
  # INSTALL / BUILD instructions for Apache Superset
  -At this time, the docker file at RELEASING/Dockerfile.from_tarball
  +At this time, the docker file at RELEASING/Dockerfile.from_local_tarball
  constitutes the recipe on how to get to a working release from a source
  release tarball.
  