Minor reword and fixed the line length

Author: javiereguiluz

http_cache/expiration.rst

@@ -87,7 +87,8 @@ servers should not send ``Expires`` dates more than one year in the future."
 
 .. note::
 
-    Accordingly with `RFC 7234 - Caching`_, the `Expires` header value will be ignored by any recipient if a `s-max-age` or `max-age` header is defined.
+    Accordingly with `RFC 7234 - Caching`_, the ``Expires`` header value is
+    ignored when a ``s-max-age`` or ``max-age`` header is defined.
 
 
 .. _`expiration model`: http://tools.ietf.org/html/rfc2616#section-13.2