docs: add missing section to ENVIRONMENT.md

No, this is not an env var understood by logind. Let's fix the
confusoin.

diff --git a/docs/ENVIRONMENT.md b/docs/ENVIRONMENT.md
index eaac288ec585d5881d37142713a83c652b2c77b4..038f3d2d1d78b0944bc1cb196527adf85a615df6 100644 (file)
--- a/docs/ENVIRONMENT.md
+++ b/docs/ENVIRONMENT.md
@@ -91,6 +91,8 @@ systemd-logind:
   hibernation is available even if the swap devices do not provide enough room
   for it.
 
+systemd-udevd:
+
 * `$NET_NAMING_SCHEME=` – if set, takes a network naming scheme (i.e. one of
   "v238", "v239", "v240"…, or the special value "latest") as parameter. If
   specified udev's net_id builtin will follow the specified naming scheme when