AP_Scripting: Docs: correct argument order on `mavlink:init` #46189

Job	Run time
build (stm32f7, chibios, 10)	13m 39s
build (stm32h7, chibios, 10)	12m 11s
build (fmuv2-plane, chibios, 10)	2m 17s
build (periph-build, chibios, 10)	3m 46s
build (iofirmware, chibios, 10)	1m 43s
build (CubeOrange-bootloader, chibios, 10)	1m 10s
build (fmuv3-bootloader, chibios, 10)	1m 11s
build (revo-bootloader, chibios, 10)	1m 0s
build (stm32h7-debug, chibios, 10)	2m 7s
build (fmuv3, chibios, 10)	6m 1s
build (revo-mini, chibios, 10)	4m 42s
build (MatekF405-Wing, chibios, 10)	4m 50s
build (CubeOrange-ODID, chibios, 10)	2m 32s
build (CubeRedPrimary-bootloader, chibios, 10)	51s
build (configure-all, chibios, 10)	11m 19s
build (build-options-defaults-test, chibios, 10)	7m 21s
build (signing, chibios, 10)	3m 12s
build (CubeOrange-PPP, chibios, 10)	2m 1s
build (CubeRed-EKF2, chibios, 10)	2m 25s
build (SOHW, chibios, 10)	3m 15s
build (Pixhawk6X-PPPGW, chibios, 10)	1m 16s
build (new-check, chibios, 10)	4m 21s
	1h 33m 10s

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