change rst style links to http style links

FULL_INSTALL.rst

+.. _full_server_setup
 Full server setup
 =================
 
@@ -159,5 +160,5 @@ to get it from our Gitlab server.
     cd ./certbot-haproxy/
     sudo pip install ./
 
-Continue reading `README.rst`_ after the quick installation instructions, at
+Continue reading `</README.rst>`_ after the quick installation instructions, at
 :ref:`haproxy_config`

README.rst

@@ -49,7 +49,7 @@ Installing:
 -----------
 
 If you need to set up a server, follow the instructions in the
-`FULL_INSTALL.rst`_ document. If you only need to install the certbot-haproxy
+`</FULL_INSTALL.rst>`_ document. If you only need to install the certbot-haproxy
 plugin and already have HAProxy running on a server, keep reading.
 
 Quick installation
@@ -251,4 +251,4 @@ after the server has been offline for a long time.
 Development
 -----------
 
-For development guidelines, check `CONTRIBUTING.rst`_
+For development guidelines, check `</CONTRIBUTING.rst>`_