Update app.py

app.py

@@ -18,7 +18,7 @@ def format_size(num: int) -> str:
 def format_output(memory_mapping):
     markdown_str = ""
     if memory_mapping:
-        for component, memory in memory_mapping:
+        for component, memory in memory_mapping.items():
             markdown_str += f"* {component}: {format_size(memory)}\n"
     return markdown_str