src/sage/rings/finite_rings: Update doctest output (trac->github)

Author: Matthias Koeppe

src/sage/rings/finite_rings/element_base.pyx

@@ -34,7 +34,7 @@ def is_FiniteFieldElement(x):
         sage: from sage.rings.finite_rings.element_base import is_FiniteFieldElement
         sage: is_FiniteFieldElement(1)
         doctest:...: DeprecationWarning: the function is_FiniteFieldElement is deprecated; use isinstance(x, sage.structure.element.FieldElement) and x.parent().is_finite() instead
-        See https://trac.sagemath.org/32664 for details.
+        See https://github.com/sagemath/sage/issues/32664 for details.
         False
         sage: is_FiniteFieldElement(IntegerRing())
         False

src/sage/rings/finite_rings/finite_field_base.pyx

@@ -2122,7 +2122,7 @@ def is_FiniteField(R):
         sage: from sage.rings.finite_rings.finite_field_base import is_FiniteField
         sage: is_FiniteField(GF(9,'a'))
         doctest:...: DeprecationWarning: the function is_FiniteField is deprecated; use isinstance(x, sage.rings.finite_rings.finite_field_base.FiniteField) instead
-        See https://trac.sagemath.org/32664 for details.
+        See https://github.com/sagemath/sage/issues/32664 for details.
         True
         sage: is_FiniteField(GF(next_prime(10^10)))
         True

src/sage/rings/finite_rings/finite_field_constructor.py

@@ -800,7 +800,7 @@ def is_PrimeFiniteField(x):
         sage: from sage.rings.finite_rings.finite_field_constructor import is_PrimeFiniteField
         sage: is_PrimeFiniteField(QQ)
         doctest:...: DeprecationWarning: the function is_PrimeFiniteField is deprecated; use isinstance(x, sage.rings.finite_rings.finite_field_base.FiniteField) and x.is_prime_field() instead
-        See https://trac.sagemath.org/32664 for details.
+        See https://github.com/sagemath/sage/issues/32664 for details.
         False
         sage: is_PrimeFiniteField(GF(7))
         True