docs: chains should be R/L

inference_app.py

@@ -21,7 +21,7 @@ def predict(
 ) -> tuple[str, float]:
     start_time = time.time()
     # Do inference here
-    # return an output pdb file with the protein and two chains A and B.  
+    # return an output pdb file with the protein and two chains R and L.  
     receptor = atom_array_from_pdb_file(receptor_pdb, extra_fields=["b_factor"])
     ligand = atom_array_from_pdb_file(ligand_pdb, extra_fields=["b_factor"])
     receptor = normalize_orientation(receptor)