improve the change-note

Co-authored-by: Asger F <asgerf@github.com>

javascript/ql/src/change-notes/2024-03-21-target-blank-precision.md

@@ -1,4 +1,4 @@
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 category: queryMetadata
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-* The `@precision` of the `js/unsafe-external-link` has been lowered to `low` to reflect that modern browsers do not provider the `opener` attribute and thus mitigate the potential security risk of having a link with `target="_blank"`.
+* The `@precision` of the `js/unsafe-external-link` has been reduced to `low` to reflect the fact that modern browsers do not expose the opening window for such links. This mitigates the potential security risk of having a link with `target="_blank"`.