docs: Update the pre-built section in README

Debian and Ubuntu repositories are now available and the documentation
how to install these binaries as well as the Fedora Copr based builds
are now available on a community wiki page.

To avoid having to maintain the same information more places, use
the wiki pages.

Signed-off-by: David Sommerseth <davids@openvpn.net>

README.md

@@ -23,6 +23,15 @@ client front-end.  Any language which supports D-Bus bindings can also be
 used.
 
 
+Pre-built binaries
+-----------------
+
+See the instructions on
+https://community.openvpn.net/openvpn/wiki/OpenVPN3Linux how to install
+pre-built OpenVPN 3 Linux packages on Debian, Ubuntu, Fedora,
+Red Hat Enterprise Linux, CentOS and Scientific Linux.
+
+
 Quick start: Using the `openvpn2` front-end
 -----------------------------------------
 
@@ -244,14 +253,6 @@ More information can be found in the [`openvpn3-linux(7)`](docs/man/openvpn3-lin
 man page and [OpenVPN 3 D-Bus overview](docs/dbus/dbus-overview.md).
 
 
-Pre-built binaries
------------------
-
-There exists installable packages for Fedora, Red Hat Enterprise Linux,
-CentOS and Scientific Linux via a Fedora Copr repository.  See this
-URL for more details:  https://copr.fedorainfracloud.org/coprs/dsommers/openvpn3/
-
-
 How to build openvpn3-linux locally
 -----------------------------------