Use \versionchanged, not \versionadded.
diff --git a/Doc/lib/libre.tex b/Doc/lib/libre.tex
index cf05441..0f9619f 100644
--- a/Doc/lib/libre.tex
+++ b/Doc/lib/libre.tex
@@ -915,7 +915,7 @@
You can often restructure your regular expression to avoid recursion.
-\versionadded[Simple uses of the \regexp{*?} pattern are now
+\versionchanged[Simple uses of the \regexp{*?} pattern are now
special-cased to avoid recursion. Thus, the above regular expression
can avoid recursion by being recast as \regexp{Begin [a-zA-Z0-9_ ]*?end}.
As a further benefit, such regular expressions will run faster than