* doc/misc/tramp.texi: Use it.
* doc/misc/trampver.texi: Declare @trampurl.
@command{ssh}/@command{scp}.
You can find the latest version of this document on the web at
-@uref{https://www.gnu.org/software/tramp/}.
+@uref{@value{trampurl}}.
@ifhtml
The latest release of @value{tramp} is available for
@c tramp.el, and the bug report address is auto-frobbed from
@c configure.ac.
@set trampver 2.5.0-pre
+@set trampurl https://www.gnu.org/software/tramp/
@set tramp-bug-report-address tramp-devel@@gnu.org
@set emacsver 25.1