Minor doc fixes.

docs/src/reference/extension_types.rst

@@ -61,7 +61,7 @@ This section was moved to :ref:`arithmetic_methods`.
 Rich Comparisons
 ================
 
-This section was moved to :ref:`righ_comparisons`.
+This section was moved to :ref:`rich_comparisons`.
 
 The ``__next__()`` Method
 =========================

docs/src/userguide/special_methods.rst

@@ -353,7 +353,7 @@ Note that Cython 0.x did not make use of the ``__r...__`` variants and instead
 used the bidirectional C slot signature for the regular methods, thus making the
 first argument ambiguous (not 'self' typed).
 Since Cython 3.0, the operator calls are passed to the respective special methods.
-See `arithmetic_methods`_ above.
+See the section on `Arithmetic methods <arithmetic_methods>`_ above.
 
 Numeric conversions
 ^^^^^^^^^^^^^^^^^^^