[support] Add page breaks.

Partially addresses #4228.

Author: Dawn Perchik

source/support.tex

@@ -2364,6 +2364,8 @@
 respectively.
 \end{itemdescr}
 
+\newpage
+
 \rSec3[new.delete.array]{Array forms}
 
 \indexlibrarymember{new}{operator}%
@@ -4496,6 +4498,8 @@
 \tcode{v < 0 ?\ strong_ordering::greater :\ v > 0 ?\ strong_ordering::less :\ v}.
 \end{itemdescr}
 
+\newpage
+
 \rSec2[cmp.common]{Class template \tcode{common_comparison_category}}
 
 \pnum