DOC: fixed a minor mistake worksheet -> workbook (pandas-dev#39124)

Author: pilyavetsb

doc/source/getting_started/comparison/comparison_with_spreadsheets.rst

@@ -35,7 +35,7 @@ General terminology translation
 ``DataFrame``
 ~~~~~~~~~~~~~
 
-A ``DataFrame`` in pandas is analogous to an Excel worksheet. While an Excel worksheet can contain
+A ``DataFrame`` in pandas is analogous to an Excel worksheet. While an Excel workbook can contain
 multiple worksheets, pandas ``DataFrame``\s exist independently.
 
 ``Series``