docs/sp_SP: Add translation for scheduler/sched-design-CFS.rst

Translate Documentation/scheduler/sched-design-CFS.rst into Spanish
Signed-off-by: Sergio González Collado <sergio.collado@gmail.com>
Reviewed-by: Carlos Bilbao <carlos.bilbao.osdev@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240707195047.14359-1-sergio.collado@gmail.com

Documentation/scheduler/sched-design-CFS.rst

+.. _sched_design_CFS:
+
 =============
 CFS Scheduler
 =============

Documentation/translations/sp_SP/index.rst

@@ -78,3 +78,4 @@ Traducciones al español
 
    process/index
    wrappers/memory-barriers
+   scheduler/index

Documentation/translations/sp_SP/scheduler/index.rst

+.. include:: ../disclaimer-sp.rst
+
+.. _sp_scheduler_index:
+
+.. toctree::
+    :maxdepth: 1
+
+    sched-design-CFS