DOC: fixes Sphinx parallel build error on doc/source/whatsnew/v0.24.0.rst (#54935)

JohannaTrost · johanna.trost · web-flow · commit ac8d34dd9a3a · 2023-09-01T10:49:58.000-07:00
Add missing StringIO import

Co-authored-by: johanna.trost &lt;johanna.trost@univ-lyon1.fr&gt;
diff --git a/doc/source/whatsnew/v0.24.0.rst b/doc/source/whatsnew/v0.24.0.rst
@@ -286,6 +286,7 @@ value. (:issue:`17054`)
 
 .. ipython:: python
 
+    from io import StringIO
     result = pd.read_html(StringIO("""
       <table>
         <thead>
