(?:...) is a non-capturing, but still grouping construct.
diff --git a/Doc/library/re.rst b/Doc/library/re.rst
index 206f4d9..102cbaa 100644
--- a/Doc/library/re.rst
+++ b/Doc/library/re.rst
@@ -229,7 +229,7 @@
undefined.
``(?:...)``
- A non-grouping version of regular parentheses. Matches whatever regular
+ A non-capturing version of regular parentheses. Matches whatever regular
expression is inside the parentheses, but the substring matched by the group
*cannot* be retrieved after performing a match or referenced later in the
pattern.