Fixed #4700 -- linkify method in changelog (#4715)

* Fixed #4700 -- linkify method in changelog

* fixed linkification

* oxford comma

* line length
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index bf4278c..5acc050 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -29,10 +29,12 @@
 * Added initial support for parsing PKCS12 files with
   :func:`~cryptography.hazmat.primitives.serialization.pkcs12.load_key_and_certificates`.
 * Added support for :class:`~cryptography.x509.IssuingDistributionPoint`.
-* Added `rfc4514_string()` method to :class:`~cryptography.x509.Name`,
-  :class:`~cryptography.x509.RelativeDistinguishedName` and
-  :class:`~cryptography.x509.NameAttribute` to format the name or component as
-  a RFC 4514 Distinguished Name string.
+* Added ``rfc4514_string()`` method to
+  :meth:`x509.Name <cryptography.x509.Name.rfc4514_string>`,
+  :meth:`x509.RelativeDistinguishedName
+  <cryptography.x509.RelativeDistinguishedName.rfc4514_string>`, and
+  :meth:`x509.NameAttribute <cryptography.x509.NameAttribute.rfc4514_string>`
+  to format the name or component an :rfc:`4514` Distinguished Name string.
 * Added
   :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.from_encoded_point`,
   which immediately checks if the point is on the curve and supports compressed