move revoked_certificate assignment in the doctests
diff --git a/docs/x509/reference.rst b/docs/x509/reference.rst
index fe52727..e7e02de 100644
--- a/docs/x509/reference.rst
+++ b/docs/x509/reference.rst
@@ -408,7 +408,8 @@
 
             >>> len(crl)
             1
-            >>> type(crl[0])
+            >>> revoked_certificate = crl[0]
+            >>> type(revoked_certificate)
             <class 'cryptography.hazmat.backends.openssl.x509._RevokedCertificate'>
             >>> for r in crl:
             ...     print(r.serial_number)
@@ -700,10 +701,6 @@
 
     .. versionadded:: 1.0
 
-    .. doctest::
-
-        >>> revoked_certificate = crl[0]
-
     .. attribute:: serial_number
 
         :type: :class:`int`