MNLI diagnostic example bug (#1294)

Author: zphang

examples/notebooks/jiant_MNLI_Diagnostic_Example.ipynb

@@ -292,7 +292,7 @@
     "jiant_run_config[\"taskmodels_config\"][\"task_to_taskmodel_map\"] = {\n",
     "    \"mnli\": \"mnli\",\n",
     "    \"mnli_mismatched\": \"mnli\",\n",
-    "    \"glue_diagnostics\": \"glue_diagnostics\",\n",
+    "    \"glue_diagnostics\": \"mnli\",\n",
     "}\n",
     "os.makedirs(\"./run_configs/\", exist_ok=True)\n",
     "py_io.write_json(jiant_run_config, \"./run_configs/jiant_run_config.json\")"