[c++20] The last item in [cpp.predefined] looks very silly

[zygoloid]

[cpp.predefined] has a list of predefined macros along with descriptions. We have an unfortunate page break that puts this on a new page, all by itself:

The names listed in Table 19.

The macros defined in Table 19 shall be defined to the corresponding integer literal.
[Note 3: Future revisions of C++ might replace the values of these macros with greater values. —end note]

Adding bullets to this list would help, as would somehow forcing Table 19 to start on the previous page.

[jensmaurer]

Shuffling the offending item to the middle, just after the other "year-month" macro we have, fixes the issue.

[zygoloid]

Merged to master in bf5a7e4.