DOC: Fix typo in indexing.rst (#58717)

Fix typo in "Returning a view versus a copy" section

Author: m-ahmadi

doc/source/user_guide/indexing.rst

@@ -1711,6 +1711,6 @@ Why does assignment fail when using chained indexing?
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 :ref:`Copy-on-Write <copy_on_write>` is the new default with pandas 3.0.
-This means than chained indexing will never work.
+This means that chained indexing will never work.
 See :ref:`this section <copy_on_write_chained_assignment>`
 for more context.