add doctest for #34143

Author: yyyyx4

src/sage/rings/integer.pyx

@@ -2177,6 +2177,11 @@ cdef class Integer(sage.structure.element.EuclideanDomainElement):
             ...
             TypeError: no canonical coercion from Univariate Polynomial
             Ring in t over Rational Field to Rational Field
+
+        Test for :trac:`34143`::
+
+            sage: pow(5,7,13).parent()
+            Integer Ring
         """
         if modulus is not None:
             from sage.rings.finite_rings.integer_mod import Mod