Update app.py

app.py

@@ -24,8 +24,9 @@ from html_templates import (
     format_description_html,
     format_single_dog_result,
     format_multiple_breeds_result,
-    format_error_message,
-    format_warning_html,
+    format_unknown_breed_message,
+    format_not_dog_message,
+    format_hint_html,
     format_multi_dog_container,
     format_breed_details_html,
     get_color_scheme,