Fix typo

app.py

@@ -51,7 +51,7 @@ def parse_md_link(md_link: str) -> Tuple[str, str]:
 def search_specific_website(topic: str, url: str, num_results: int):
     query = f"{url} {topic}"
 
-    query_result =  web_search(query).split("\n\n")[1:n]
+    query_result =  web_search(query).split("\n\n")[1:num_results]
     output = []
     for result in query_result:
         link, description = result.split("\n")