Fixed typo cell annotation notebook

docs/source/notebooks/cell_annotation.ipynb

@@ -853,7 +853,7 @@
     "## Enrichment with Over Representation Analysis (ORA)\n",
     "\n",
     "To infer functional enrichment scores we will run the Over Representation Analysis (`ora`) method.\n",
-    "As input data it accepts an expression matrix (`decoupler.run_ora`) or the results of differential expression analysis (`decoupler.run_ora_df`).\n",
+    "As input data it accepts an expression matrix (`decoupler.run_ora`) or the results of differential expression analysis (`decoupler.get_ora_df`).\n",
     "For the former, by default the top 5% of expressed genes by sample are selected as the set of interest (S*), and for the latter a user-defined\n",
     "significance filtering can be used.\n",
     "Once we have S*, it builds a contingency table using set operations for each set stored in the gene set resource being used (`net`).\n",