Add changelog item

Signed-off-by: Johannes Löthberg <johannes.loethberg@elokon.com>

.changelog/21208.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+http: Fix regression preventing sessions from being created without a node, as long as a TTL was specified and there are no `NodeChecks`.
+```

website/content/commands/lock.mdx

@@ -24,7 +24,8 @@ If the lock holder count is more than one, then a semaphore is used instead.
 A semaphore allows more than a single holder, but this is less efficient than
 a simple lock. This follows the [semaphore algorithm](/consul/tutorials/developer-configuration/distributed-semaphore).
 
-To apply a lock to a remote WAN federated datacenter, run the command with the `-datacenter=<name>` flag on a server agent. You cannot use the command with `-datacenter` on client agents because they are unavailable to the remote datacenter.
+To apply a lock to a remote WAN federated datacenter, run the command with the
+`-datacenter=<name>` flag.
 
 All locks using the same prefix must agree on the value of `-n`. If conflicting
 values of `-n` are provided, an error will be returned.