Added notes to NETW-3200 for future extending this test

include/tests_networking

@@ -666,6 +666,8 @@
 #
     # Test        : NETW-3200
     # Description : Determine available network protocols
+    # Notes       : See all available supported modules: ls -d /lib/modules/$(uname -r )/kernel/net
+    #               To see active/enabled protocols: ls -d /proc/sys/net
     Register --test-no NETW-3200 --weight L --network YES --category security --description "Determine available network protocols"
     if [ ${SKIPTEST} -eq 0 ]; then
         TESTED=0