[EDITORIAL] give common_iterator::operator-> its own subsection and s…

…table name, refs #318

iterators.tex

@@ -4035,6 +4035,8 @@
 \effects Equivalent to: \tcode{return *iter;}
 \end{itemdescr}
 
+\rSec4[common.iter.op.ref]{\tcode{common_iterator::operator->}}
+
 \indexlibrary{\idxcode{operator->}!\idxcode{common_iterator}}%
 \indexlibrary{\idxcode{common_iterator}!\idxcode{operator->}}%
 \begin{itemdecl}