Make the parameter ordering in sign() consistent with other code
diff --git a/docs/x509.rst b/docs/x509.rst
index c4c441e..79f4829 100644
--- a/docs/x509.rst
+++ b/docs/x509.rst
@@ -515,7 +515,7 @@
         :returns: A new
             :class:`~cryptography.x509.CertificateSigningRequestBuilder`.
 
-    .. method:: sign(backend, private_key, algorithm)
+    .. method:: sign(private_key, algorithm, backend)
 
         :param backend: Backend that will be used to sign the request.
             Must support the