DOC: Add missing word to IndexOpsMixin.array docstring (pandas-dev#55034)

Add missing word to `IndexOpsMixin.array` docstring

Author: dpoznik

pandas/core/base.py

@@ -485,8 +485,8 @@ def array(self) -> ExtensionArray:
             types, this is the actual array. For NumPy native types, this
             is a thin (no copy) wrapper around :class:`numpy.ndarray`.
 
-            ``.array`` differs ``.values`` which may require converting the
-            data to a different form.
+            ``.array`` differs from ``.values``, which may require converting
+            the data to a different form.
 
         See Also
         --------