!!!Bug: print PX4 version error!!!

[xiaofyao]

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Issue details

When the mavros library printed the PX4 version, I found that the result was wrong.

I found this bug by investigating the source code:

https://github.com/mavlink/mavros/blob/master/mavros/src/plugins/sys_status.cpp#L583

Error passing parameter in this place. I think the correct way to pass parameters is as follows:
return utils::format("%016llX", b);