fix syntax

app.py

@@ -123,8 +123,8 @@ st.write(neighbors)
 
 G = nx.Graph()
 G.add_weighted_edges_from(
-    [neighbors.gene_index_1.to_list(),
-     neighbors.gene_index_2.to_list(),
+    [neighbors.gene_index_a.to_list(),
+     neighbors.gene_index_b.to_list(),
      neighbors.coexp_score.to_list()])
 layout = nx.spring_layout(G)