Issue #13237: fix typo
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index 7269768..ee46d72 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -376,7 +376,7 @@
system shell implicitly. This means that all characters, including shell
metacharacters, can safely be passed to child processes. Obviously, if the
shell is invoked explicitly, then it is the application's responsibility to
-all that all whitespace and metacharacters are quoted appropriately.
+ensure that all whitespace and metacharacters are quoted appropriately.
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