[string.classes] Turn <string> synopsis into numbered subclause

tkoeppe · tkoeppe · commit c58e854d79a7 · 2016-11-29T21:47:16.000Z
In pursuit of issue #566.
diff --git a/source/strings.tex b/source/strings.tex
@@ -588,9 +588,9 @@
 and
 \tcode{basic_string<\brk{}wchar_t>}, respectively.
 
-\synopsis{Header \tcode{<string>} synopsis}
+\rSec2[string.syn]{Header \tcode{<string>} synopsis}
+\indexlibrary{\idxhdr{string}}
 
-\indexlibrary{\idxhdr{string}}%
 \begin{codeblock}
 #include <initializer_list>
 
