doc corrections

Author: jreback

doc/source/whatsnew/v0.20.2.txt

@@ -59,7 +59,7 @@ I/O
 - Bug in pd.read_csv() when comment is passed in space deliminted text files (:issue:`16472`)
 - Bug that would force importing of the clipboard routines unnecessarily, potentially causing an import error on startup (:issue:`16288`)
 - Bug that raised IndexError HTML-rendering an empty DataFrame (:issue:`15953`)
-- Bug where ``DataFrame.to_html`` ignored the ``index_names`` parameter (:issue:`16493`)
+- Bug where ``DataFrame.to_html()`` ignored the ``index_names`` parameter (:issue:`16493`)
 
 
 Plotting

pandas/tests/io/formats/test_to_html.py

@@ -1871,6 +1871,7 @@ def test_to_html_notebook_has_no_style(self):
         assert "thead tr:only-child" not in result
 
     def test_to_html_with_index_names_false(self):
+        # gh-16493
         df = pd.DataFrame({"A": [1, 2]}, index=pd.Index(['a', 'b'],
                                                         name='myindexname'))
         result = df.to_html(index_names=False)