Wiki description fix

tools/wikipedia.py

@@ -50,7 +50,7 @@ async def _search(title: str, limit: int = 5, fallback: bool = False) -> str:
         return f"No Wikipedia results found for '{title}'."
     
     if fallback:
-        header = f"Article not found. Please select one of the following similar articles to proceed with '{title}':"
+        header = f"Article not found. You MUST select one of the following articles and submit another query:"
     else:
         header = f"Search results for '{title}':"