dix: Fix URL to description of focus in/out model

The current URL points to an unrelated patch for acpid.

Signed-off-by: Povilas Kanapickas <povilas@radix.lt>
4 jobs for fix-focus-in-out-model-doc-url in 5 minutes and 46 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Docker Image
passed debian-buster #8316709

00:00:09

 
  Build And Test
passed autotools #8316710

00:05:37

passed meson #8316711

00:01:52

passed meson-noglamor #8316712

00:02:14