Python: Apply suggestions from code review

RasmusWL · nickrolfe · web-flow · commit 8386b36217ae · 2022-02-03T15:00:04.000+01:00
Co-authored-by: Nick Rolfe &lt;nickrolfe@github.com&gt;
diff --git a/python/ql/src/change-notes/2021-01-19-remove-regexp-from-printast.md b/python/ql/src/change-notes/2021-01-19-remove-regexp-from-printast.md
@@ -1,4 +1,4 @@
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 category: fix
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-* The [View AST functionality](https://codeql.github.com/docs/codeql-for-visual-studio-code/exploring-the-structure-of-your-source-code/) no longer prints detailed information about regular expression, greatly improving performance.
+* The [View AST functionality](https://codeql.github.com/docs/codeql-for-visual-studio-code/exploring-the-structure-of-your-source-code/) no longer prints detailed information about regular expressions, greatly improving performance.
