[dcl.spec] Add a page break before examples.

Partially addresses #4228.

Author: Dawn Perchik

source/declarations.tex

@@ -582,6 +582,9 @@
 a \grammarterm{typedef-name} is thus a synonym for another type. A
 \grammarterm{typedef-name} does not introduce a new type the way a class
 declaration\iref{class.name} or enum declaration\iref{dcl.enum} does.
+
+\newpage
+
 \begin{example}
 After
 \begin{codeblock}
@@ -1733,6 +1736,9 @@
 \end{codeblock}
 the \grammarterm{expression-list} shall be a single
 \grammarterm{assignment-expression}.
+
+\newpage
+
 \begin{example}
 \begin{codeblock}
 auto x = 5;                     // OK: \tcode{x} has type \tcode{int}