US 192-312 32.5.7.3p2 [atomics.ref.int] Use integral-type, floating-point-type, and pointer-type, not "T"

[wg21bot]

These should say integral-type, floating-point-type, and pointer-type respectively rather than T.

Proposed change:

Modify accordingly.

[timsong-cpp]

Also applies to 32.5.7.4p2 and 32.5.7.5p2

[jensmaurer]

Accepted.