Issue #27895: Spelling fixes (Contributed by Ville Skyttä).
diff --git a/Lib/concurrent/futures/thread.py b/Lib/concurrent/futures/thread.py
index 6266f38..03d276b 100644
--- a/Lib/concurrent/futures/thread.py
+++ b/Lib/concurrent/futures/thread.py
@@ -16,7 +16,7 @@
# to exit when there are still idle threads in a ThreadPoolExecutor's thread
# pool (i.e. shutdown() was not called). However, allowing workers to die with
# the interpreter has two undesirable properties:
-# - The workers would still be running during interpretor shutdown,
+# - The workers would still be running during interpreter shutdown,
# meaning that they would fail in unpredictable ways.
# - The workers could be killed while evaluating a work item, which could
# be bad if the callable being evaluated has external side-effects e.g.