fix nb (#793)

Author: juanitorduz

docs/source/notebooks/mmm/mmm_tvp_example.ipynb

@@ -753,7 +753,7 @@
     "    print(\n",
     "        \"base_intercept:\",\n",
     "        float(\n",
-    "            mmm.idata.posterior.base_intercept.mean()\n",
+    "            mmm.idata.posterior.baseline_intercept.mean()\n",
     "            * mmm.target_transformer.steps[0][1].scale_[0]\n",
     "        ),\n",
     "    )\n",