Librarian Bot: Add base_model information to model

README.md

@@ -2,12 +2,13 @@
 license: apache-2.0
 tags:
 - generated_from_keras_callback
-model-index:
-- name: MUmairAB/bert-based-MaskedLM
-  results: []
 datasets:
 - imdb
 pipeline_tag: fill-mask
+base_model: distilbert-base-uncased
+model-index:
+- name: MUmairAB/bert-based-MaskedLM
+  results: []
 ---