Clarify note [ci skip]

[ci skip]

Author: TomAugspurger

doc/source/whatsnew/v0.23.2.txt

@@ -40,7 +40,7 @@ Documentation Changes
 Build Changes
 -------------
 
-- The source and binary distributions no longer include test files, resulting in smaller download sizes. Tests relying on these files will be skipped when using ``pandas.test()``. (:issue:`19320`)
+- The source and binary distributions no longer include test data files, resulting in smaller download sizes. Tests relying on these data files will be skipped when using ``pandas.test()``. (:issue:`19320`)
 
 .. _whatsnew_0232.bug_fixes: