Update src/spin_sdk/util.py

Co-authored-by: Joel Dice <joel.dice@akamai.com>

Author: vdice

src/spin_sdk/util.py

@@ -11,7 +11,7 @@
 async def collect(tuple: Tuple[StreamReader[T], FutureReader[Result[None, E]]]) -> List[T]:
     """
     Collect all items from the StreamReader portion of the provided Tuple and return them in a List,
-    verifying the FutureReader result upon stream completion.
+    verifying the FutureReader result upon stream completion and, if it is error, raising it as an exception.
     """
     stream = tuple[0]
     future = tuple[1]