DOC: DataFrame.reset_index names param can't be a tuple as docs state (pandas-dev#58032)

* remove 'or tuple'

* remove trailing space

Author: gboeker

pandas/core/frame.py

@@ -6011,8 +6011,8 @@ def reset_index(
 
         names : int, str or 1-dimensional list, default None
             Using the given string, rename the DataFrame column which contains the
-            index data. If the DataFrame has a MultiIndex, this has to be a list or
-            tuple with length equal to the number of levels.
+            index data. If the DataFrame has a MultiIndex, this has to be a list
+            with length equal to the number of levels.
 
             .. versionadded:: 1.5.0