bluetooth4LE: BTLE_ADV PDU_type enum typo fix

[antoniovazquezblanco]

Checklist:

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The referenced documentation in the code shows a slightly different name. See below.

[XenoKovah]

FWIW this isn't actually a typo, the packet used to legitimately be called CONNECT_REQ in BT Core spec <= 4.2, but as of 5.0 they changed it to CONNECT_IND (and we're now on BT Spec 6.0), so it'd just be good to get this synced up with the latest specs.

[antoniovazquezblanco]

Oh, makes sense. I went directly to the referenced Core v5.2 in the code and the new name was used...

Thanks!