Update api.py

api.py

@@ -147,7 +147,7 @@ def format_ki_descriptions(descriptions: list[str]) -> str:
   for ind in range(len(descriptions)):
     ki_number = ind + 1
     formatted_description = f"Here is the description of the key issue {ki_number}: <description{ki_number}>{descriptions[ind]}<description{ki_number}>"
-    if ind == len(sample) - 1:
+    if ind == len(descriptions) - 1:
       formatted_descriptions += formatted_description
     else:
       formatted_descriptions += formatted_description + "\n"