Use :doc: instead of :ref: for random-numbers
diff --git a/docs/x509/reference.rst b/docs/x509/reference.rst
index 1dd466e..5e58886 100644
--- a/docs/x509/reference.rst
+++ b/docs/x509/reference.rst
@@ -469,8 +469,7 @@
identify this certificate (most notably during certificate
revocation checking). Users are encouraged to use a method of
generating 20 bytes of entropy, e.g., UUID4. For more information
- on secure random number generation, see
- :ref:`secure_random_number_generation`.
+ on secure random number generation, see :doc:`/random-numbers`.
.. method:: not_valid_before(time)