Updated the indexing.rst for Issue 58583 (#58607)

* Adding check on integer value of periods issue#56607

* Adding check on integer value of the periods issue#56607

* Adding check on integer value of the periods issue#56607

* Added validation check to Series.diff,updated testcase and whatsnew

* Updated whatsnew

* Updated whatsnew

* Update doc/source/whatsnew/v2.3.0.rst

Co-authored-by: Thomas Li <47963215+lithomas1@users.noreply.github.com>

* Updated whatsnew with new comment

* Update doc/source/whatsnew/v2.3.0.rst

Co-authored-by: Thomas Li <47963215+lithomas1@users.noreply.github.com>

* Update doc/source/whatsnew/v2.3.0.rst

Co-authored-by: Thomas Li <47963215+lithomas1@users.noreply.github.com>

* Updated the Documentation for Slicing with labels for .loc()

---------

Co-authored-by: Thomas Li <47963215+lithomas1@users.noreply.github.com>

Author: pmhatre1

doc/source/user_guide/indexing.rst

@@ -403,9 +403,9 @@ are returned:
    s = pd.Series(list('abcde'), index=[0, 3, 2, 5, 4])
    s.loc[3:5]
 
-If at least one of the two is absent, but the index is sorted, and can be
-compared against start and stop labels, then slicing will still work as
-expected, by selecting labels which *rank* between the two:
+If the index is sorted, and can be compared against start and stop labels,
+then slicing will still work as expected, by selecting labels which *rank*
+between the two:
 
 .. ipython:: python