US 185-299 29.10.9.5 [simd.mask.conv] Rearrange subclauses

[wg21bot]

There is no such thing as “conversion operator”.

Proposed change:

Combine the two subclauses into one titled “basic_mask conversions”. Update the class definition accordingly.

[timsong-cpp]

This applies to 29.10.9.5 and 29.10.9.6.

[jensmaurer]

Accepted.