Update app.py

app.py

@@ -3,7 +3,7 @@ import os
 from setfit import SetFitModel
 
 model_names = ['java-summary', 'java-pointer', 'java-deprecation', 'java-rational', 'java-ownership', 'java-usage', 'java-expand', 
-          'pharo-example', 'pharo-key-implementation', 'pharo-responsibilities', 'pharo-collaborators'
+          'pharo-example', 'pharo-key-implementation', 'pharo-responsibilities', 'pharo-collaborators',
           'python-summary', 'pharo-parameters', 'pharo-usage', 'pharo-development-notes', 'pharo-expand']
 
 models = {}