Clarify that register_model can be called on local filesystem paths (#…

…9765)

Signed-off-by: Sid Murching <[email protected]>

mlflow/tracking/_model_registry/fluent.py

@@ -27,8 +27,10 @@ def register_model(
     tracking backend.
 
     :param model_uri: URI referring to the MLmodel directory. Use a ``runs:/`` URI if you want to
-                      record the run ID with the model in model registry. ``models:/`` URIs are
-                      currently not supported.
+                      record the run ID with the model in model registry (recommended), or pass the
+                      local filesystem path of the model if registering a locally-persisted MLflow
+                      model that was previously saved using ``save_model``.
+                      ``models:/`` URIs are currently not supported.
     :param name: Name of the registered model under which to create a new model version. If a
                  registered model with the given name does not exist, it will be created
                  automatically.