DOC: Improve describe() documentation (pandas-dev#41012)

* DOC: Improve describe() documentation

* DOC: Remove Column References

Author: bharatr21

doc/source/getting_started/intro_tutorials/01_table_oriented.rst

@@ -176,7 +176,7 @@ these are by default not taken into account by the :func:`~DataFrame.describe` m
 
 Many pandas operations return a ``DataFrame`` or a ``Series``. The
 :func:`~DataFrame.describe` method is an example of a pandas operation returning a
-pandas ``Series``.
+pandas ``Series`` or a pandas ``DataFrame``.
 
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