Update app.py

Añadido import de restroalimentacion.

app.py

@@ -11,6 +11,7 @@ from sklearn.metrics.pairwise import cosine_similarity
 from sklearn.metrics import mean_absolute_error, mean_squared_error
 from joblib import dump, load
 from utils import recomienda_tf
+from utils import retroalimentacion
 import requests
 
 # Page configuration