doc: Add setting to disable MAC randomization

doc/main.conf

@@ -14,3 +14,12 @@ max_4way_handshake_time=5
 # The behavior of the user-initiated scans isn't affected.
 # The periodic scan is enabled by default.
 #disable_periodic_scan=true
+#
+
+#
+# Disable MAC address randomization. Setting this option to 'true' will prevent
+# the capable network adapters from randomizing MAC addresses during the active
+# scans for networks, thus decreasing user privacy.
+# The MAC address randomization is enabled by default.
+#disable_mac_address_randomization=true
+#