Documentation: mono: Update links and s/CVS/Git/

The URLs in mono.rst redirect to pages on www.mono-project.com, so let's
update them. I took the liberty to update the compilation instructions
to the Linux-specific version, because readers of the kernel
documentation will most likely use Linux.
Signed-off-by: NJonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/mono.rst

@@ -9,14 +9,14 @@ This will allow you to execute Mono-based .NET binaries just like any
 other program after you have done the following:
 
 1) You MUST FIRST install the Mono CLR support, either by downloading
-   a binary package, a source tarball or by installing from CVS. Binary
+   a binary package, a source tarball or by installing from Git. Binary
    packages for several distributions can be found at:
 
-	http://go-mono.com/download.html
+	http://www.mono-project.com/download/
 
    Instructions for compiling Mono can be found at:
 
-	http://www.go-mono.com/compiling.html
+	http://www.mono-project.com/docs/compiling-mono/linux/
 
    Once the Mono CLR support has been installed, just check that
    ``/usr/bin/mono`` (which could be located elsewhere, for example