Update app.py

app.py

@@ -1603,7 +1603,7 @@ if __name__ == "__main__":
         
         self.component_index = self._build_component_index()
         self.category_index = self._build_category_index()
-    }
+    
     return templates    
                   
         self.component_index = self._build_component_index()