concurrent.futures: Fix typo in docstring (GH-92121)

miss-islington · yiannis-had · web-flow · commit 1a7867fc0c39 · 2022-05-02T09:25:45.000-07:00
(cherry picked from commit b11243e) Co-authored-by: Yiannis Hadjicharalambous <hadjicharalambous.yiannis@gmail.com>
diff --git a/Lib/concurrent/futures/_base.py b/Lib/concurrent/futures/_base.py
@@ -381,7 +381,7 @@ def running(self):
             return self._state == RUNNING
 
     def done(self):
-        """Return True of the future was cancelled or finished executing."""
+        """Return True if the future was cancelled or finished executing."""
         with self._condition:
             return self._state in [CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED]
 
