Fix typo in ChangeLog. NFC (#23319)

Author: midzer

ChangeLog.md

@@ -37,7 +37,7 @@ See docs/process.md for more on how version tagging works.
   the JS `new` keyword.  e.g. `a = new Module()` rather than `b = Module()`.
   This paves the way for marking the function as `async` which does not allow
   `new` to be used.  This usage of `new` here was never documented and is
-  considered and antipattern. (#23210)
+  considered an antipattern. (#23210)
 - `PATH.basename()` no longer calls `PATH.normalize()`, so that
   `PATH.basename("a/.")` returns `"."` instead of `"a"` and
   `PATH.basename("a/b/..")` returns `".."` instead of `"a"`. This is in line with