docs: document usb mavlink and configurator startup

docs/src/logs.md

@@ -83,6 +83,6 @@ The log ingress is transport-neutral and unfiltered. The tested
 fanning an event into that sink and proves `kaptan_log::info!` reaches a
 generated `LOG` payload.
 `kaptan-sitl serve` does not yet attach a file/diagnostic MAVLink link. F722
-images accept only the unsigned Kaptan file service on their directly wired
-local UART; that direct-wire assumption does not extend to a shared or remote
-MAVLink network.
+images accept the unsigned Kaptan file service on local USB CDC-ACM and their
+directly wired UART; that physical-link assumption does not extend to a shared
+or remote MAVLink network.