[master] 66e9ab7 clarify the per-backend ramup parameter magic default value

[Nils Goroll]

commit 66e9ab78235028cacef1bbfdbb4957e6c92fa8b7
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Mon Oct 31 14:11:32 2016 +0100

    clarify the per-backend ramup parameter magic default value

diff --git a/lib/libvmod_directors/vmod.vcc b/lib/libvmod_directors/vmod.vcc
index c3e2a8a..c0fd1b8 100644
--- a/lib/libvmod_directors/vmod.vcc
+++ b/lib/libvmod_directors/vmod.vcc
@@ -360,8 +360,9 @@ backend name.
 
 `ident` allows to add multiple instances of the same backend.
 
-`rampup`: Optionally specify a rampup time for this backend. Defaults
-to the director rampup time.
+`rampup`: Optionally specify a specific rampup time for this
+backend. The magic default value of `973279260s` instructs the shard
+director to use the default rampup time (see :ref:`func_shard.set_rampup`).
 
 NOTE: Backend changes need to be finalized with `shard.reconfigure()`
 and are only supported on one shard director at a time.