Documentation: teaching: lectures: add virtualization slides

Signed-off-by: Octavian Purdila <tavi@cs.pub.ro>

Author: tavip

Documentation/teaching/index.rst

@@ -57,6 +57,7 @@ tools/labs/docs/Dockerfile for dependencies):
    lectures/fs.rst
    lectures/debugging.rst
    lectures/networking.rst
+   lectures/virt.rst
 
 .. toctree::
    :caption: Labs