Fix inaccuracies in spawn and defer descriptions.

Author: Sleitnick

content/en-us/reference/engine/libraries/task.yaml

@@ -20,8 +20,7 @@ functions:
     description: |
       Accepts a function or a thread (as returned by coroutine.create) and
       calls/resumes it immediately through the engine's scheduler. Arguments
-      after the first are sent to the function/thread. This function does not
-      return any value, even if the provided function returns one immediately.
+      after the first are sent to the function/thread.
 
       This function is based on the fastSpawn pattern rather than being a
       replacement for the deprecated global `spawn` function. It is recommended
@@ -55,12 +54,11 @@ functions:
       Calls/resumes a function/coroutine on the next resumption cycle.
     description: |
       Accepts a function or a thread (as returned by coroutine.create) and
-      defers it until the next
+      defers it until the end of the current
       [resumption cycle](https://devforum.roblox.com/t/1240569), at which point
       it is resumed with the engine's scheduler like with
       `Library.task.spawn()`. Arguments after the first are sent to the
-      function/thread. This function does not return any value, even if the
-      provided function returns one immediately.
+      function/thread.
 
       This function should be used when a similar behavior to
       `Library.task.spawn()` is desirable, but the thread does not need to run